Second Class maths · D.6 · Add and Subtract to 100
Add three or four two-digit numbers
Add the tens, then the ones, then put them together.
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15 + 19 + 17 =
Answer: 51
16 + 16 + 17 =
Answer: 49
10 + 11 + 19 =
Answer: 40
Tip: Add the tens, then the ones, then put them together.
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