Page 90 - Arithmetic

FOR ONLINE USE ONLY
DO NOT DUPLICATE

Example 2
FOR ONLINE USE ONLY

80 _ 44 =

Solution
_
80 44 = 36

Steps
1. Subtract the ones, but 0 – 4 80 – 44 =

is impossible.
Impossible

2. Take 1 tens from the group of

8 tens. You remain with 7 tens. 7 10

The group of ones become 80 – 44 =
10 + 0 = 10.

3. Subtract ones, 10 – 4 = 6.
7 10
Write 6 in the ones place. 80 – 44 = 6

4. Subtract tens, 7 – 4 = 3.
7 10
Write 3 in the tens place. 80 – 44 = 3 6

Therefore 80 – 44 = 36.

83
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Ministry of Education, Science and Technology
Mathematics STD 1.indd 83 03/08/2019 11:18