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KengaRu [80]
4 years ago
14

228-123 regroup and estimate

Mathematics
2 answers:
Elis [28]4 years ago
8 0
    228  - 123  →  105

228 is estimated to 230 
123 is estimated to 120

230 - 120  → 110 (Try going with this statement ←)

aev [14]4 years ago
6 0
228-123= 105 Estimated: 110
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