2.8/25%简便运算1...2.8/25%2...3.7*99%+0.037*1

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2.8/25%简便运算1...2.8/25%2...3.7*99%+0.037*1
2.8/25%简便运算
1...2.8/25%
2...3.7*99%+0.037*1

2.8/25%简便运算1...2.8/25%2...3.7*99%+0.037*1
2.8/25%
=2.8÷(1÷4)
=2.8÷1×4
=2.8×4
=11.2
3.7*99%+0.037*1
=3.7×0.99+3.7×0.01
=3.7×(0.99+0.01)
=3.7×1
=3.7