Page 91 - Math Skill - 5

Decimal 89

4. Arrange in ascending order.

(a) 6.32, 63.2, 23.6, 62.3, 32.6 (b) 56.666, 65.565, 87.954, 87.459, 56.668
5. Fill in the blanks with >, < or = .

(a) 2.012 0.212 (b) 896.325 982.513

(c) 6.35 63.5 (d) 0.0053 0.0053

Addition and Subtraction of Decimals

We can add or subtract decimals in the same way as we do in case of numbers.
To add decimal numbers, we follow these steps:

Step 1: Convert the given decimals into like decimals if they are unlike.
Step 2: Write the addends one below the other so that the decimal points are in same column.
Step 3: Now, add the decimal numbers just as ordinary numbers and put the decimal point

in the sum. Fact-o-meter

Now, let us add 36.79 and 123.05 following the above steps. Conversion of unlike

1 decimals into like decimals
3 6 . 7 9 makes the addition or
+ 1 2 3 . 0 5 subtraction easier.
1 5 9 . 8 4

To subtract decimal numbers, we follow these steps:
Step 1: Convert the given decimals into like decimals if they are unlike.
Step 2: Write the greater number on top and smaller one below, so that the decimal points

are in same column.
Step 3: Subtract the decimal numbers just as ordinary numbers and put the decimal point

in the difference.
Now, let us subtract 0.508 from 93.5 following the above steps.

2 14 9 10
9 3 . 5 0 0 (93.5 → 93.500)
– 0 . 5 0 8
9 2 . 9 9 2

Let’s Attempt

Example 1: Add 3.04, 12.5, 3.687 and 124.95.

Solution: Converting the given numbers into like decimals, we get as:

3.04 → 3.040; 12.5 → 12.500;
3.687; 124.95 → 124.950