28加14乘以98简便方法怎么计算
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发布时间:2022-05-16 18:32
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热心网友
时间:2023-11-19 20:40
28+14*98
=28+14*(100-2)
=28+14*100-28
=14*100=1400
或
28+14*98
=14*2+14*100
=14*(2+98+
=14*100=1400
热心网友
时间:2023-11-19 20:40
28 + 14 × 98
= 28 + 14 × (100 - 2)
= 28 + 1400 - 28
= 1400
热心网友
时间:2023-11-19 20:41
(28+14)X98
=42X98
=42X(100-2)
=42X100-42X2
=4200-84
=4116