Mathematics

Grade-2

Easy

Question

# Use partial sums to find the sum of 18 and 42.

- 50
- 60
- 70
- 80

Hint:

### To find partial sums add the digits in tens place and ones place separately.

Place value is **the value of each digit in a number**. For example, the 5 in 350 represents 5 tens, or 50; however, the 5 in 5,006 represents 5 thousands, or 5,000. It is important that children understand that whilst a digit can be the same, its value depends on where it is in the number.

## The correct answer is: 60

### To find partial sums add the digits in tens place and ones place separately.

Partial sum of 18 + 42

Step 1 : Add digits in tens and ones place separately:

10 08

+ 40 and + 02

_____ ______

50 10

Thus, the sum of 18 + 42 are 50 + 10 = 60.

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