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D:\Working\TouchPad_Maths\TouchPad_Maths_1\Open_Files\Chap_07\Chap_07
\ 17-Nov-2025 Surender Singh Rothan Proof-7 Reader’s Sign _______________________ Date __________
2. Add and subtract to match the correct answer. One has been done for you.
8 + 7 12 15 – 3
9 + 9 15 18 – 1
10 + 2 14 17 – 2
16 + 1 17 18 – 0
11 + 3 18 16 – 2
SuBtrACtion in tEnS
Example 1. Subtract 20 from 30.
Solution.
T O
3 0
- = – 2 0
1 0
3 tens - 2 tens = 1 ten
30 - 20 = 10
Example 2. Find 40 - 10.
Solution.
T O
4 0
- = – 1 0
3 0
4 tens - 1 ten = 3 tens
40 - 10 = 30
114 Mathematics 1
