How to add three numbers of 2digit with carryover?
The examples will help us to learn to add three or more numbers of 2digit 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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