Practice the problems of Math in Focus Grade 3 Workbook Answer Key Chapter 12 Practice 2 Real-World Problems: Two-Step Problems to score better marks in the exam.
Math in Focus Grade 3 Chapter 12 Practice 2 Answer Key Real-World Problems: Two-Step Problems
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Question 1.
The mass of grapefruit is 1,200 grams. A watermelon is 850 grams heavier than a grapefruit.
a. What is the mass of the watermelon?
Answer:
the mass of the watermelon = 2050 grams.
Explanation:
The mass of grapefruit is 1,200 grams.
A watermelon is 850 grams heavier than a grapefruit.
1200 + 850 = 2050 grams
b. What is the total mass of the two fruits? Give your answer in kilograms and grams.
Answer:
the total mass of the two fruits = 3250 grams
The mass in kilograms = 3.250 grams.
Explanation:
Water melon weight + grapes weight
2050 + 1200 = 3250 grams
Question 2.
Box A has a mass of 35 kilograms. Box B is twice as heavy as Box A. Box C is 1 2 kilograms lighter than Box B.
a. What is the mass of Box B?
Answer:
the mass of Box B = 70 kilograms
Explanation:
Box A has a mass of 35 kilograms.
A = 35
Box B is twice as heavy as Box A.
2 x 35 = 70
Box C is 1 2 kilograms lighter than Box B.
70 – 12 = 58
b. What is the mass of Box C?
Answer:
the mass of Box C = 58 kilograms
Explanation:
Box C is 1 2 kilograms lighter than Box B.
70 – 12 = 58
Question 3.
Jill has 3,1 10 milliliters of water left after filling 3 mugs. Each mug contains 330 milliliters of water.
a. How much water is in the 3 mugs?
Answer:
990 Milliliters water is in the 3 mugs
Explanation:
Each mug contains 330 milliliters of water.
Filled the water in 3 mugs
330 x 3 = 990 Milliliters
b. How much water was there to start with? Give your answer in liters and milliliters.
Answer:
The water started with 4100 Milliliters
and in liters 4.1 liters
Explanation:
990 Milliliters + 3,1 10 milliliters = 4,100 milliliters
1 Liter = 1000 milliliters
4 x 1000 = 4000 : 4.1 liters
Question 4.
A ball of yarn is cut into 4 pieces. Each piece is 65 centimeters long.
a. How long was the ball of yarn?
Answer:
The ball of yarn is 260 is 260 centimeters long
Explanation:
65 x 4 = 260
b. How much yarn is left if one piece is given away? Give your answer in meters and centimeters.
Answer:
260 – 65 = 195 centimeters
1.95 in meters
Explanation:
The total yarn is 260 centimeters
1 piece = 65 centimeters
260 – 65 = 195
1 meter = 100 centimeters.
Question 5.
Ricardo wants to find the distance from his house to the library.
The distance from his house to the library is 3 times the distance from his house to the school.
a. What is the distance from Ricardo’s house to the school?
Answer:
the distance from Ricardo’s house to the school = 120 meters
Explanation:
The distance between school and library is 360 meters
The distance from his house to the library is 3 times the distance from his house to the school.
so, 360 ÷ 3 = 120
b. What is the distance between his house and the library?
Answer:
the distance between his house and the library = 480 meters.
Explanation:
If we want to find the distance from house and the library
we have to add the distance from house to school and school to library
360 + 120 = 480 meters
Question 6.
A butcher has a large piece of beef. He cuts and sells 6 portions. Each has a mass of 10 kilograms. He has 2 kilograms left. Find the total mass of beef the butcher had at first.
Answer:
the total mass of beef the butcher had at first = 60 Kilograms
Explanation:
A butcher has a large piece of beef.
He cuts and sells 6 portions.
Each has a mass of 10 kilograms.
6 x 10 = 60Kiolograms
He has 2 kilograms left.
60 – 2 = 58 kilograms
the total mass of beef the butcher had at first = 60 Kilograms
Question 7.
There is 141 milliliters of water in a mug. Rachel spills 45 milliliters of water from the mug. She then pours the remaining water equally into 4 cups. How much water is in each cup?
Answer:
24 milliliters of water is in each cup
Explanation:
There is 141 milliliters of water in a mug.
Rachel spills 45 milliliters of water from the mug.
141 – 45 = 96 milliliters
She then pours the remaining water equally into 4 cups.
96 ÷ 4 = 24
24 milliliters of water is in each cup
Question 8.
Mrs. Vance buys 710 grams of strawberries. She has 210 grams of strawberries left after making 5 glasses of strawberry smoothie. How many grams of strawberries does she use for a glass?
Answer:
100 grams
Explanation:
Mrs. Vance buys 710 grams of strawberries.
She has 210 grams of strawberries left after making 5 glasses of strawberry smoothie.
710 – 210 = 500 grams
500 ÷ 5 = 100
100 grams of strawberries that she use for a glass
Question 9.
In a story, a tortoise and a hare take part in a race. They have to run up and down the same hill. The distance from the foot to the top of the hill is 996 meters. The hare takes a nap after running 578 meters. How much further must the hare run complete the race? Give your answer in kilometers and meters.
Answer:
418 meters
and 41,800 centimeters
Explanation:
The distance from the foot to the top of the hill is 996 meters.
The hare takes a nap after running 578 meters.
996 – 578 = 418 meters
418 meters further must the hare run complete the race
1 meter = 100 centimeter
so, 418 x 100 = 41,800 centimeters
Question 10.
Six glasses of water can fill a bottle. Two bottles of water can fill a pitcher. The pitcher can hold 600 milliliters of water. How much water can a glass hold?
Answer:
50 milliliters water can a glass hold
Explanation:
The pitcher can hold 600 milliliters of water.
Two bottles of water can fill a pitcher.
600 ÷ 2 = 300
Six glasses of water can fill a bottle.
300 ÷ 6 = 50 milliliters
50 milliliters water can a glass hold