Practice the problems of Math in Focus Grade 2 Workbook Answer Key Chapter 8 Practice 3 Measuring in Grams to score better marks in the exam.

## Math in Focus Grade 2 Chapter 8 Practice 3 Answer Key Measuring in Grams

**Fill in the blanks.**

**The mass of each is 1 gram.**

Question 1.

The cap of a pen has a mass of ___ grams.

Answer: 4 grams.

Explanation:

Observe the picture carefully, there is a pen cap on one side and there are grams on another side.

There are 4 1 grams are present. Add all the grams it becomes 4.

Therefore, the weight of the pen cap is 4 grams.

Question 2.

The pencil has a mass of __ grams.

Answer: 9 grams.

First, notice that you are looking for weight. A pencil weighs more than a paperclip but less than a kitten. This means it would be best measured in grams. The answer is the weight of a pencil would be best measured in grams.

Add all the grams present over there. Then we get 9 ‘1’ grams are there.

Therefore, the pencil has a mass of 9 grams.

Question 3.

The sharpener has a mass of ___ grams.

Answer: 7 grams.

Explanation:

1. we will compare the weights of the sharpener and grams by placing them on each end of the scale.

2. The scale remains the same at a certain angle.

3. Add the grams and then write the mass of the sharpener.

4. Therefore, the sharpener has a mass of 7 grams.

Question 4.

The eraser has a mass of ___ grams.

Answer: 16 grams.

Explanation:

1. we will compare the weights of the eraser and grams by placing them on each end of the scale.

2. The scale remains the same at a certain angle.

3. Add the grams and then write the mass of the eraser.

4. Therefore, the eraser has a mass of 16 grams.

**Fill in the blanks.**

Question 5.

Answer:

Explanation:

1. Start at 0 and count the lines.

2. From 0 count the next line it is 5.

3. After 5 it will be 10 and the next it will be 15. It was like multiples of 5.

4. According to that count the grams and fill the blanks according to that.

Question 6.

Answer:

Explanation:

1. Start at 0 and count the lines. Each line represents the 10

2. From 0 count the next line it is 10.

3. After 10 the next line will be 20, 30, 40, and so on…

4. According to that count the grams and write the blanks.

Question 7.

Answer:

Explanation:

1. Start at 0 and count the lines. Each line represents the 1

2. From 0 count the next line it is 1.

3. After 1 the next line will be 2, 3, 4, and so on… it is like multiples of 1.

4. According to that count the grams and write the blanks.

**Fill in the missing numbers.**

Question 8.

Answer:

1. Start at 0 and count the lines. Each line represents the 10

2. From 0 count the next line it is 10.

3. After 10 the next line will be 20, 30, 40, and so on…

4. According to that count the grams and write the blanks.

**Fill in the blanks.**

Question 9.

The sandwich has a mass of __ grams.

Answer: 100 grams.

The measuring scale is showing 100 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

Question 10.

The box of crackers has a mass of __ grams.

Answer: 400 grams.

The measuring scale is showing 400 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

**Fill in the blanks.**

Question 11.

The pencil case has a mass of ___ grams.

Answer:250 grams.

The measuring scale is showing 250 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

Question 12.

The water bottle has a mass of ___ grams.

Answer:250 grams.

The measuring scale is showing 250 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

**Fill in the blanks.**

Question 13.

The bag of peanuts has a mass of ___ grams.

Answer:170 grams.

The bag of peanuts has a mass of 170 grams.

The measuring scale is showing 170 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

Question 14.

The box of crackers has a mass of ___ grams.

Answer: 370 grams.

The box of crackers has a mass of 370 grams.

The measuring scale is showing 370 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

**Fill in the blanks.**

Question 15.

The empty bowl has a mass of ___ grams.

Answer: 300 grams.

Already given the mass of empty bowl.

Question 16.

Some marbles are put into the bowl.

The bowl and the marbles have a mass of __ grams

Answer: 480 grams.

The measuring scale is showing 480 grams.

Explanation:

1. Choose a scale that measures in grams**.** Make sure the scale can handle the size of objects you plan on weighing. Since a gram is a metric unit of measurement, your scale needs to use the metric system. Scales are available in digital and mechanical models.

2. Weigh an empty container first before putting an item in it**.** If you plan to measure something you can’t put directly on the scale, weigh the container before putting the item in it.

3. Press the tare button to zero out the scale**.** The mysterious button labelled “tare” on digital scales is a reset button. Press the tare button after each item you measure on the scale. If you weighed a container, you can fill it now.

4. Set the object you wish to measure on the scale**.** Place your object in the centre of the scale. If you measured a container first, you can now put the object you wish to measure inside the container. The scale will then calculate the heaviness of your object.

5. Finish weighing the object on the scale. Wait for the scale’s digital display or needle to come to a stop. When it finishes moving, read the number to find out how heavy the object is. Make sure that the weight is in grams. Then, remove your object and hit the tare button again to reset the scale.

Question 17.

What is the mass of the marbles? ___ grams

Answer: 180 grams.

Explanation:

The mass of the empty bottle=300 grams.

The total mass of marbles and empty bottle combine is 480 grams.

Now we need to calculate the mass of the marbles. Assume it as X.

Subtract the total mass and mass of the empty bottle.

X=480-300

X=180

Therefore, the mass of marbles is 180 grams.