1) The answer to a subtraction problem a) estimate b) difference c) subtract d) regroup 2) To take away the lesser number from the greater number a) difference b) estimate c) subtract d) regroup 3) To trade equal amounts when renaming a number a) estimate b) subtract c) difference d) regroup 4) An answer close to the real answer a) regroup b) estimate c) difference d) subtract 5) A number sentence in which one number is taken away from another number a) subtraction sentence b) addition sentence c) division sentence d) multiplication sentence 6) Two operations that can undo each other, like addition and subtraction a) difference b) subtraction c) inverse operations d) regroup

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