Practice the problems of Math in Focus Grade 6 Workbook Answer Key Chapter 11 Circumference and Area of a Circle to score better marks in the exam.
Math in Focus Grade 6 Course 1 B Chapter 11 Answer Key Circumference and Area of a Circle
Math in Focus Grade 6 Chapter 11 Ouick Check Answer Key
Add.
Question 1.
0.451 + 3.12
Answer:
3.571,
Explanation:
Adding 3.12 to 0.451 we will get
0.451
+3.120
3.571
Question 2.
0.861 + 6.95
Answer:
7.811,
Explanation:
Adding 6.95 to 0.861 we will get
0.861
+6.950
7.811
Question 3.
13.74 + 3.791
Answer:
17.531,
Explanation:
Adding 3.791 to 13.74 we will get
13.740
+3.791
17.531
Subtract.
Question 4.
5.45 – 1.78
Answer:
3.67,
Explanation:
Subtacting 1.78 from 5.45 we will get
5.45
-1.78
3.67
Question 5.
12.795 – 0.816
Answer:
11.979,
Explanation:
Subtracting 0.816 from 12.795 we will get
12.795
-0.816
11.979
Question 6.
42.781 – 36.19
Answer:
6.591
Explanation:
Subtracting 36.19 from 42.781 we will get
42.781
-36.190
6.591
Multiply
Question 7.
1.34 × 9
Answer:
12.06,
Explanation:
Given to multiply 1.34 with 9 we will get
3,3
1.34
X 9
12.06
Question 8.
4.246 × 2
Answer:
8.492,
Explanation:
Given to multiply 4.246 by 2 we will get
1
4.246
X 2
8.492
Question 9.
7.487 × 8
Answer:
59.896,
Explanation:
Given to multiply 7.487 by 8 we will get
3,6,5
7.487
X 8
59.896
Divide
Question 10.
2.56 ÷ 5
Answer:
0.512,
Explanation:
5)2.56(0.512
2.5
0.06
0.05
0.01
0.01
0
Question 11.
2.429 ÷ 7
Answer:
0.347,
Explanation:
7)2.429(0.347
2.1
0.32
0.28
0.049
0.049
0
Question 12.
1.143 ÷ 9
Answer:
0.127,
Explanation:
9)1.143(0.127
0.9
0.24
0.18
0.063
0.063
0
Question 13.
4.671 ÷ 9
Answer:
0.519,
Explanation:
9)4.671(0.519
4.5
0.17
0.09
0.081
0.081
0
Question 14.
0.656 ÷ 8
Answer:
0.082,
Explanation:
8)0.656(0.082
0.64
0.016
0.016
0
Question 15.
0.867 ÷ 3
Answer:
0.289,
Explanation:
3)0.867(0.289
0.6
0.26
0.24
0.027
0.027
0
Round to the nearest whole number.
Question 16.
4.56
Answer:
5,
Explanation:
Asked to round 4.56 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 4.56 is 5.
Question 17.
12.05
Answer:
12,
Explanation:
Asked to round 12.05 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 12.05 is 12.
Question 18.
6.48
Answer:
6,
Explanation:
Asked to round 6.48 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 6.48 is 6.
Question 19.
6.50
Answer:
7,
Explanation:
Asked to round 6.50 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 6.50 is 7.
Question 20.
14.15
Answer:
14,
Explanation:
Asked to round 14.15 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 14.15 is 14.
Question 21.
46.59
Answer:
47,
Explanation:
Asked to round 46.59 to the nearest whole number so if number is less than 5 then round the number down by removing the decimal part of the number, If it is 5 or more then round the number up by adding one on to the ones digit and removing the decimal part of the number. So 46.59 is 47.
Round to the nearest tenth.
Question 22.
7.68
Answer:
7.7,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 7.68 is 7.7.
Question 23.
3.05
Answer:
3.00,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 3.05 is 3.00.
Question 24.
19.92
Answer:
20.00,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 19.92 is 20.00.
Question 25.
5.55
Answer:
5.60,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 5.55 is 5.60.
Question 26.
8.17
Answer:
8.0,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 8.17 is 8.0.
Question 27.
2.44
Answer:
2.4,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 2.44 is 2.4.
Question 28.
43.65
Answer:
43.7,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 43.65 is 43.7.
Question 29.
23.73
Answer:
23.8,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 23.73 is 23.8.
Question 30.
17.51
Answer:
17.5,
Explanation:
To round a number to the nearest tenth, we need to look to the right of the tenths place, which is the hundredths place. If the digit in the hundredths place is 5 or greater than 5, we need to add one to the digit in the tenths place. If it is 4 or less than 4, the tenths place digit remains the same. All the digits to the right of the tenths place should be changed to 0. That means, while rounding off a number to the nearest tenth, we will stop the rounding at the tenths place. So 17.51 is 17.5.