# Math in Focus Grade 5 Chapter 9 Practice 2 Answer Key Multiplying by Tens, Hundreds, and Thousands

Practice the problems of Math in Focus Grade 5 Workbook Answer Key Chapter 9 Practice 2 Multiplying by Tens, Hundreds, and Thousands to score better marks in the exam.

## Math in Focus Grade 5 Chapter 9 Practice 2 Answer Key Multiplying by Tens, Hundreds, and Thousands

Complete. Draw chips and use arrows to show how the chips move. Then fill in the blanks.

Question 1. 12 x 10 = 120
2 x 10 = 20
0.2 x 10 = 2
0.12 x 10 = 1.2
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Multiply.
Question 2.  Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 3.  Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 4.  Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 5.  Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 6.
10 × 7.9 = ___ Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 7.
10 × 4.8 = ___ Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 8.
10 × 27.54 = ___ Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 9.
10 × 12.009 = ____ Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 10.
0.7 × ___ = 7
0.7 x 10 = 7 Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 11.
15.72 × ___ = 157.2
15.72 x 10 = 157.2 Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 12.
10 × ___ = 534.2

10 x 53.42 Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 13.
___ × 10 = 19.07
1.907 x 10 = 190.7 Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Complete

Example
8 × 50 = (8 × 5) × 10
= 40 × 10
= 400
So, 8 × 50 = 400

Question 14.
0.8 × 50 = (0.8 × 5) × ___
= ___ × 10
= ____
So, 0.8 × 50 = ___
0.8 × 50 = (0.8 × 5) × 10
= 4.0 × 10
= 40
So, 0.8 × 50 = 40
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 15.
0.88 × 50 = (0.88 × ___) × 10
= ___ × 10
= ____
So, 0.88 × 50 = ___
0.88 × 50 = (0.88 × 5) × 10
= 4.4 × 10
= 44
So, 0.88 × 50 = 44
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Find each product.

Question 16.
0.9 × 40 = ____
0.9 × 40 = (0.9 × 4) × 10
= 3.6 × 10
= 36
So, 0.9 × 40 = 36
Explanation:
Separate 40 as 4 ones and 1 tenths,
then multiply with ones first and later tens.

Question 17.
1.5 × 60 = ___
1.5 × 60 = (1.5 × 6) × 10
= 9.0 × 10
= 90
So, 1.5 × 60 = 90

Explanation:
Separate 60 as 6 ones and 1 tenths,
then multiply with ones first and later tens.

Question 18.
0.05 × 80 = ____
0.05 × 80 = (0.05 × 8) × 10
= 0.4 × 10
= 4
So, 0.05 × 80 = 4
Explanation:
Separate 80 as 8 ones and 1 tenths,
then multiply with ones first and later tens.

Question 19.
9.17 × 70 = ___
9.17 x 70 = (9.17 x 7) x 10
=64.19 x 10
=641.9
So, 9.17 x 70 = 641.9
Explanation:
Separate 70 as 7 ones and 1 tenths,
then multiply with ones first and later tens.

Question 20.
6.358 × 30 = ___
6.358 x 30 = (6.358 x 3) x 10
=19.074 x 10
=190.74
So,6.358x 30 = 190.74
Explanation:
Separate 30 as 3 ones and 1 tenths,
then multiply with ones first and later tens.

Question 21.
34.6 × 50 = ____
34.6 x 50 = (34.6 x 5) x 10
= 173 x 10
= 1730
So, 34.6 x 50 =1730
Explanation:
Separate 50 as 5 ones and 1 tenths,
then multiply with ones first and later tens.

Question 22.
41.32 × 60 = ___
41.32 x 60 = (41.32 x 6) x 10
= 247.92 x 10
= 2479.2
So, 41.32 x 60= 2479.2
Explanation:
Separate 60 as 6 ones and 1 tenths,
then multiply with ones first and later tens.

Question 23.
23.05 × 40 = ___
23.05 x 40 = (23.05 x 4) x 10
=92.2 x 10
=922
So, 23.05 x 40 = 92.2
Explanation:
Separate 40 as 4 ones and 1 tenths,
then multiply with ones first and later tens.

Question 24. Explanation:
1.3 x 100 = (1.3 x10) x 10
=13 x 10
=130
So, 1.3 x 100 = 130
Question 25. Explanation:
6.8 x 100 = (6.8 x 10) x 10
= 68 x 10
= 680
So, 6.8 x 100 = 680

Question 26. Explanation:
4.196 x 100 = (4.196 x 10) x 10
= 41.96 x 10
= 419.6
So, 4.196 x 100 = 419.6

Question 27. Explanation:
74.3 x 100 = (74.3 x 10) x 10
= 743 x 10
= 7430
So, 74.3 x 100 = 7430

Question 28.
46.8 × 1oo = ______
Explanation:
46.8 x 100 = (46.8 x 10) x 10
=468 x 10
= 4680

Question 29.
4.68 × 100 = ___
Explanation:
4.68 x 100 = (4.68 x 10) x 10
=46.8 x 10
= 468
So, 4.68 x 100 = 468

Question 30.
5.095 × 100 = ______
Explanation:
5.095 x 100 = (5.095 x 10 )x 10
= 50.95 x 10
= 509.5
So, 5.095 x 100 = 509.5

Question 31.
100 × 50.95 = ____
Explanation:
50.95 x 100 = (50.95 x 10) x 10
= 509.5 x 10
= 5095
So, 50.95 x 100 = 5095

Multiply.

Question 32. Explanation:
1.8 x 1000 = (1.8 x 10) x 10 x 10
= 18 x 10 x 10
=180 x 10
=1800
So, 1.8 x 1000 = 1800
Question 33. Explanation:
2.1 x 1000 = (2.1 x 10) x 10 x 10
=21 x 10 x 10
= 210 x 10
= 2100
So, 2.1 x 1000 = 2100

Question 34. Explanation:
9.097 x 1000 = (9.097 x 10) x 10 x 10
=90.97 x 10 x 10
= 909.7 x 10
=9097
So, 9.097 x 1000 = 9097

Question 35. Explanation:
7.007 x 1000 = (7.007 x 10) x 10 x 10
= 70.07 x 10 x 10
= 700.7 x 10
= 7007
So, 7.007 x 1000 = 7007

Question 36.
2.74 × 1,000 = ______
Explanation:
2.74 x 1000=  (2.74  x 10) x 10 x 10
=27.4 x 10 x 10
=274 x 10
= 2740

Question 37.
27.4 × 1,000 = ____
Explanation:
27.4 x 1000 = (27.4 x 10) x 10 x 10
=274 x 10 x10
=2740 x 10
27400

Question 38.
1,000 × 10.81 = ______
Explanation:
10.81 x 1000 =(10.81 x 10) x 10 x 10
= 108.1 x10 x 10
= 1081 x 10
= 10810
So, 10.81 x 1000 = 10810

Question 39.
108.1 × 1,000 = ____
Explanation:
108.1 x1000 =(108.1 x 10) x 10 x 10
= 1081 x 10 x 10
= 10810 x 10
= 108100
So, 108.1 x 1000 = 108100

Complete.

Example
1.2 = 0.12 × 10
= 0.012 × 100

Question 40.
360 = 36 × ____
= 3.6 × ____
= 0.36 × _____
360 = 36 × 10
= 3.6 × 100
= 0.36 × 1000
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 41.
438 = __ × 10
= ___ × 100
= ___ × 1,000
438 = 43.8 × 10
= 4.38 × 100
=0.438 × 1,000
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Question 42.
7,256 = ______ × 10
= ____ × 100
= ____ × 1,000
7,256 = 725.6 × 10
= 72.56 × 100
= 7.256 × 1,000
Explanation:
To multiply decimals, first multiply as if there is no decimal.
Next, count the number of digits after the decimal in each factor.
Finally, put the same number of digits behind the decimal in the product.

Multiply.

Example
0.3 × 700 = (0.3 × 7) × 1oo
= 2.1 × 1oo = 210
So, 0.3 × 700 = 210

Question 43.
0.003 × 700 = (0.003 × __) × 100
= ____ × 1oo = ____
So, 0.003 × 700 = ___.
0.003 × 700 = (0.003 × 7) × 100
= 0.021 × 1oo = 2.1
So, 0.003 × 700 = 2.1.
Explanation:
The place value of a number is the value represented by a digit in a number based on its position in the number.
While a place value is the value a digit holds to be at the place in the number, on the other hand.
First separate the hundredth place value,
and multiply the given numbers with the number .

Question 44.
0.03 × 2,000 = (0.03 × __) × 1,000
= ______ × 1,000 = ______
So, 0.03 × 2,000 = ____.
0.03 × 2,000 = (0.03 × 2) × 1,000
= 0.06 × 1,000 = 60
So, 0.03 × 2,000 = 60.
Explanation:
The place value of a number is the value represented by a digit in a number based on its position in the number.
While a place value is the value a digit holds to be at the place in the number, on the other hand.
First separate the place value,
and multiply the given numbers with the number .

Question 45.
0.003 × 2,000 = (0.003 × __________) × 1,000
= __________× 1,000 = _______.
So, 0.003 × 2000 = __________.
0.003 × 2,000 = (0.003 × 2) × 1,000
= 0.006× 1,000 = 6
So, 0.003 × 2000 = 6.
Explanation:
The place value of a number is the value represented by a digit in a number based on its position in the number.
While a place value is the value a digit holds to be at the place in the number, on the other hand.
First separate the place value,
and multiply the given numbers with the number .

Find each product.

Question 46.
4.5 × 200 = _______
Explanation:
(4.5 x 2) x 10 x 10
= 9 x 10 x 10
= 90 x 10
= 900
So, 4.5 x 200 = 900

Question 47.
0.49 × 300 = ___
Explanation:
0.49 x 300 = (0.49 x 3) x 10 x 10
= 1.47 x 10 x 10
= 14.7 x 10
= 147
So, 0.49 x  300 = 147

Question 48.
3.148 × 500 = ______
Explanation:
3.148 x 500 = (3.148 x 5) x 10 x 10
= 15.74 x 10 x 10
= 157.4 x 10
= 1574
So, 3.147 x 500 = 1574

Question 49.
2.27 × 700 = ___
Explanation:
2.27 x 700 = (2.27 x 7) x 10 x 10
= 15.89 x10 x10
= 158.9 x 10
= 1589
So , 2.27 x 700 = 1589

Question 50.
900 × 3.18 ______
Explanation:
3.18 x 900 = (3.18 x 9) x 10 x 10
= 28.62 x 10 x 10
= 286.2 x 10
= 2862
So, 3.18 x 900 = 2862

Question 51.
1.8 × 2,000 = ___
Explanation:
1.8 x 2000 = (1.8 x 20) x 10 x 10
= 36 x 10 x 10
=360 x 10
=3600
So, 1.8 x 2000 = 3600

Question 52.
4,000 × 2.5 = _______
Explanation:
2.5 x 4000 = (2.5 x 40) x 10 x 10
= 100 x10 x10
= 1000 x 10
= 10000
So, 2.5 x 4000 = 10000

Question 53.
72.5 × 6,000 = ___
Explanation:
72.5 x 6000 = ( 72.5 x 60) x 10 x 10
= 4350 x10 x10
= 43500 x 10
= 435000
So, 72.5 x 6000 = 435000

Question 54.
1.75 × 8,000 = ______
Explanation:
1.75 x 8000 = (1.75 x 80) x 10 x 10
= 140 x10 x10
= 1400 x10
= 14000
So 1.75 x 8000 = 14000

Question 55.
4.19 × 9,000 = ___