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🌉 Bridge Builders
Adding and subtracting across a ten (regrouping), like 8 + 5 or 32 − 7.
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Tip A quick way to do these in your head
Build a bridge to the next ten: 8 + 5 → 8 + 2 = 10, then 3 more = 13. For 32 − 7: 32 − 2 = 30, then 5 more = 25.