Make ten
The question
2 + ? = 10
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2+8=10
2 and 88 and 2
- Picture ten spaces in a row with 2 of them filled. How many are still empty?
- Count the empty ones: 8. So 2 and 8 make 10.
- This pair is worth knowing by heart — it makes sums like 8 + 5 easy later: take 2 from the 5 to finish the ten.
How it works.
- 01
Picture ten spaces in a row with 2 of them filled. How many are still empty?
- 02
Count the empty ones: 8. So 2 and 8 make 10.
- 03
This pair is worth knowing by heart — it makes sums like 8 + 5 easy later: take 2 from the 5 to finish the ten.