Page 24 - Fun with Mathematics 2
P. 24
2-DIGIT ADDITION (WITH REGROUPING)
4
Add 6 and 37.
Step 1. Add the ones digits.
T O 6 ones + 7 ones = 13 ones
1 4 6 Regroup 13 ones as 1 ten + 3 ones.
+ 3 7 Write 3 under the ones (O) column.
8 3 Carry over 1 to the tens column.
Step 2. Add the tens digits.
4
1 ten (carried over) + tens + 3 tens = 8 tens
Write 8 under the tens (T) column.
4
The sum of 6 and 37 is 83.
3 Find the sum.
(a) T O (b) T O (c) T O (d) T O
3 4 5 8 3 6 5 3
+ 2 8 + 3 7 + 4 9 + 1 7
(e) T O (f) T O (g) T O (h) T O
6 7 2 6 3 4 6 3
+ 2 5 + 2 5 + 4 7 + 2 9
(i) T O (j) T O (k) T O (l) T O
3 2 5 5 3 9 5 8
+ 3 8 + 1 9 + 1 4 + 2 9
(m) T O (n) T O (o) T O (p) T O
7 5 6 8 3 7 5 7
+ 1 5 + 2 4 + 4 6 + 3 6
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