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➖ 3-digit subtraction
Subtracting 3-digit numbers, including the tricky ones across zeros.
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Tip A quick way to do these in your head
Across zeros, count up: 400 − 158 → 158 + 2 = 160, + 40 = 200, + 200 = 400. That is 2 + 40 + 200 = 242.