Page 103 - Math Skill - 1
P. 103
Addition and Subtraction up to 99 101
T O T O T O T O
7 5 8 9 6 4 8 7
– 3 3 – 4 1 – 2 3 – 4 2
Subtraction with Regrouping/Borrowing
Subtract 17 from 45.
T O
To subtract 4 5
17 from 45, we can 45
use blocks. – 1 7
1 ten = 10 ones
Subtract the ones.
7 ones cannot be T O
subtracted from 3 15
5
4
5 ones. So, borrow
1 ten as 10 ones. – 1 7
So, 5 Ones + 10 Ones
= 15 Ones
T O
3 15
15 Ones – 7 Ones 4 5
= 8 Ones – 1 7
8
