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Make Ten
Use 10 coins or buttons. Split them into two groups in every way you can: 1 + 9, 2 + 8…
Try it7 + ? = 10
Math by Grade
Use 10 coins or buttons. Split them into two groups in every way you can: 1 + 9, 2 + 8…
Try it7 + ? = 10
Pick a domino and add the dots on both sides.
Try itA domino has 4 dots and 5 dots. Total?
For take-away, start at the big number and count back.
Try it9 − 3 = ?