Second Class maths · C.5 · Facts to 20
Missing number to 20
Find the number that goes in the box.
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5 + □ = 6 What number goes in the box?
Answer: 1
11 + □ = 12 What number goes in the box?
Answer: 1
□ + 10 = 11 What number goes in the box?
Answer: 1
Tip: Find the number that goes in the box.
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