How to add three numbers of 2-digit with carry-over?

The examples will help us to learn to add three or more numbers of 2-digit with carrying.

**1.** Add 46, 49 and 26

**Solution:**

46 = 4 tens + 6 ones

+ 49 = + 4 tens + 9 ones

__+ 26 = + 2 tens + 6 ones__

= 10 tens + 21 ones

= 10 tens + 2 tens + 1 one

= 12 tens + 1 one

= 121

(i) Numbers are expressed in expanded form

(ii) Digits expressing ones are added i.e., 6 + 9 + 6 = 21 ones = 2 tens + 1 one

(iii) Digits expressing tens are added i.e., 4 + 4 + 2 = 10 tens

(iv) 10 tens + 2 tens + 1 one

= 12 tens + 1 one

= 121

**2.** Add 57, 35 and
42

**Solution:**

57 = 50 + 7

+ 35 = + 30 + 5

__+ 42 = +
40 + 2 __

= 120 + 14

= 120 ← 10 + 4

= 130 + 4

= 134

(i) Digits of one’s place are added i.e., 7 + 5 + 2 = 14 ones = 1 ten 4 ones

(ii) 1 ten are carried over to tens side

(iii) Digits of ten’s place are added i.e., 5 + 3 + 4 = 12 tens

(iv) 12 tens + 1 ten = 13 tens

(v) 13 tens + 4 ones = 130 + 4 = 134

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