Practice the problems of Math in Focus Grade 4 Workbook Answer Key Chapter 8 Practice 3 Subtracting Decimals to score better marks in the exam.

## Math in Focus Grade 4 Chapter 8 Practice 3 Answer Key Subtracting Decimals

**Fill in the blanks. Write each difference as a decimal.**

Example

0.9 – 0.4 = __9__ tenths – __4__ tenths

= __5__ tenths

= __0.5__

Question 1.

1 – 0.3 = ___ tenths – ___ tenths

= ___ tenths

= ____

Answer:

1 – 0.3 = 0.7.

Explanation:

1 – 0.3 = 10 tenths – 3 tenths

= 7 tenths

= 0.7.

Question 2.

1.3 – 0.6 = ___ tenths – ___ tenths

= ___ tenths

= ____

Answer:

1.3 – 0.6 = 0.7.

Explanation:

1.3 – 0.6 = 13 tenths – 6 tenths

= 7 tenths

= 0.7.

Question 3.

1.8 – 0.9 = ___ tenths – ___ tenths

= ___ tenths

= ____

Answer:

1.8 – 0.9 = ___ tenths – ___ tenths

= ___ tenths

= ____

Explanation:

1.8 – 0.9 = 18 tenths – 9 tenths

= 9 tenths

= 0.9.

**Fill in the blanks.
**Question 4.

Step 1

You cannot subtract 7 tenths from 5 tenths. So, regroup 3 ones and 5 tenths. 3 ones and 5 tenths

= ___ ones and ___ tenths

Subtract the tenths.

___ tenths – 7 tenths = ____ tenths

Step 2

Subtract the ones.

___ ones – ___one

= ___ one

So, 3.5 – 1.7 = ____

Answer:

3.5 – 1.7 = 1.8.

Explanation:

Step 1 :

You cannot subtract 7 tenths from 5 tenths. So, regroup 3 ones and 5 tenths. 3 ones and 5 tenths

= 2 ones and 15 tenths

Subtract the tenths.

15 tenths – 7 tenths = 8 tenths.

Step 2 :

Subtract the ones.

2 ones – 1 one

= 1 one.

So, 3.5 – 1.7 = 1.8.

**Subtract.
**Question 5.

Answer:

4.6 – 2.2 = 2.4.

Explanation:

Step 1 :

Subtract the tenths :

6 tenths – 2 tenths = 4 tenths.

Step 2 :

Subtract the ones.

4 ones – 2 ones

= 2 ones.

So, 4.6 – 2.2 = 2.4.

Question 6.

Answer:

7.4 – 6.5 = 0.9.

Explanation:

Step 1 :

You cannot subtract 5 tenths from 4 tenths. So, regroup 7 ones and 4 tenths. 7 ones and 4 tenths

= 6 ones and 14 tenths.

Subtract the tenths.

14 tenths – 5 tenths = 9 tenths.

Step 2 :

Subtract the ones.

6 ones – 6 ones

= 0 ones.

So, 7.4 – 6.5 = 0.9.

**Write in vertical form. Then subtract.
**Question 7.

6.7 – 2.4 = ___

Answer:

6.7 – 2.4 = 4.3.

Explanation:

Question 8.

3 – 1.3 = ____

Answer:

3 – 1.3 = 1.7.

Explanation:

**Fill in the blanks. Write each difference as a decimal.
**Example

0.08 – 0.02 =

__8__hundredths –

__2__hundredths

=

__6__hundredths

=

__0.06__

Question 9.

0.23 – 0.19 = ___ hundredths – ___ hundredths

= ___ hundredths

= ____

Answer:

0.23 – 0.19 = 0.04.

Explanation:

0.23 – 0.19 = 23 hundredths – 19 hundredths

= 4 hundredths

= 0.04.

Question 10.

0.1 – 0.06 = ___ hundredths – ___ hundredths

= ___ hundredths

= ____

Answer:

0.1 – 0.06 = 0.94.

Explanation:

0.1 – 0.06 = 100 hundredths – 6 hundredths

= 94 hundredths

= 0.94.

**Fill in the blanks.
**Question 11.

Step 1

You cannot subtract 4 hundredths from 3 hundredths. So, regroup 2 tenths 3 hundredths.

2 tenths 3 hundredths

= ___ tenth ___ hundredths

Subtract the hundredths.

___ hundredths – ___ hundredths

= ___ hundredths

Step 2

You cannot subtract 5 tenths from ___ tenth.

So, regroup 4 ones and ___ tenth.

4 ones and ___ tenth

= ___ ones and ___ tenths

Subtract the tenths.

___ tenths – 5 tenths = ___ tenths

Step 3

Subtract the ones.

___ ones – 1 one = ___ ones

So, 4.23 – 1.54 = ___

Answer:

4.23 – 1.54 = 2.69.

Explanation:

Step 1:

You cannot subtract 4 hundredths from 3 hundredths. So, regroup 2 tenths 3 hundredths.

2 tenths 3 hundredths

= 1 tenth 13 hundredths

Subtract the hundredths.

13 hundredths – 4 hundredths

= 9 hundredths.

Step 2:

You cannot subtract 5 tenths from 1 tenth.

So, regroup 4 ones and 1 tenth.

3 ones and 11 tenth

= 4 ones and 11 tenths

Subtract the tenths.

11 tenths – 5 tenths = 6 tenths.

Step 3:

Subtract the ones.

3 ones – 1 one = 2 ones.

**Subtract.
**Question 12.

Answer:

0.39 – 0.07 = 0.32.

Explanation:

Step 1:

Subtract the hundredths.

9 hundredths – 7 hundredths

= 2 hundredths.

Step 2:

Subtract the tenths.

3 tenths – 0 tenths = 3 tenths.

Step 3:

Subtract the ones.

0 ones – 0 one = 0 ones.

Question 13.

Answer:

0.51 – 0.36 = 0.15.

Explanation:

Step 1

You cannot subtract 6 hundredths from 1 hundredths. So, regroup 5 tenths 1 hundredths.

5 tenths 1 hundredths

= 5 tenth 1 hundredths.

Subtract the hundredths.

11 hundredths – 6 hundredths

= 5 hundredths.

Step 2:

Subtract the tenths.

4 tenths – 3 tenths = 2 tenths.

Step 3:

Subtract the ones.

0 ones – 0 one = 0 ones.

Question 14.

Answer:

2.35 – 0.48 = 1.87.

Explanation:

Step 1:

You cannot subtract 8 hundredths from 5 hundredths. So, regroup 3 tenths 5 hundredths.

= 2 tenth 15 hundredths

Subtract the hundredths.

15 hundredths – 8 hundredths

= 7 hundredths.

Step 2:

You cannot subtract 4 tenths from 2 tenth.

So, regroup 2 ones and 2 tenth.

1 ones and 12 tenth.

Subtract the tenths.

12 tenths – 4 tenths = 8 tenths.

Step 3:

Subtract the ones.

1 ones – 0 one = 1 ones.

Question 15.

Answer:

12.45 – 10.63 = 1.82.

Explanation:

Step 1:

Subtract the hundredths.

5 hundredths – 3 hundredths

= 2 hundredths.

Step 2:

You cannot subtract 6 tenths from 4 tenth.

So, regroup 2 ones and 4 tenth.

= 1 ones and 14 tenths

Subtract the tenths.

14 tenths – 6 tenths = 8 tenths.

Step 3:

Subtract the ones.

1 ones – 0 one = 1 ones.

Step 4:

Subtract the tens.

1 tens – 1 tens = 0 tens.

Question 16.

Answer:

10.13 – 7.18 = 2.95.

Explanation:

Step 1:

You cannot subtract 8 hundredths from 3 hundredths. So, regroup 1 tenths 3 hundredths.

0 tenths 13 hundredths.

Subtract the hundredths.

13 hundredths – 8 hundredths

= 5 hundredths.

Step 2:

You cannot subtract 1 tenths from 0 tenth.

So, regroup 0 ones and 0 tenth.

regroup 1 tens 0 tenths.

9 ones and 10 tenth.

= 9 ones and 10 tenths

Subtract the tenths.

10 tenths – 1 tenths = 9 tenths.

Step 3:

Subtract the ones.

9 ones – 7 one = 2 ones.

So, 4.23 – 1.54 = ___

Step 4:

Subtract the tens.

0 tens – 0 tens = 0 tens.

Question 17.

Answer:

20.00 – 14.56 = 5.44.

Explanation:

Step 1:

You cannot subtract 6 hundredths from 0 hundredths. So, regroup 0 tenths 0 hundredths. So, regroup 0 ones 0 hundredths. So, regroup 2 tens 0 ones.

So, 1 tens. So, 10 ones. So, 10 tenths. So, 10 hundredths.

9 tenths 10 hundredths

= 9 tenth 10 hundredths.

Subtract the hundredths.

10 hundredths – 6 hundredths

= 4 hundredths

Step 2:

Subtract the tenths.

9 tenths – 5 tenths = 4 tenths.

Step 3:

Subtract the ones.

9 ones – 4 one = 5 ones.

Step 4:

Subtract the tens .

1 ones – 1 one = 0 ones.

**Write in vertical form. Then subtract.
**Question 18.

5.38 – 2.73 = ____

Answer:

5.38 – 2.73 = 2.65.

Explanation:

Question 19.

1.06 – 0.38 = ___

Answer:

1.06 – 0.38 = 0.68.

Explanation:

Question 20.

5.6 – 1.72 = ___

Answer:

5.6 – 1.72 = 3.88.

Explanation:

Question 21.

3 – 0.42 = ___

Answer:

3 – 0.42 = 2.58.

Explanation: