简算题 第一题 3 3/5×25 2/5+37.9×6 2/5(3 3/5也就是三又五分之三)第二题 6.8×16.8+19.3×3.2注意:一定要简算
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![简算题 第一题 3 3/5×25 2/5+37.9×6 2/5(3 3/5也就是三又五分之三)第二题 6.8×16.8+19.3×3.2注意:一定要简算](/uploads/image/z/810977-41-7.jpg?t=%E7%AE%80%E7%AE%97%E9%A2%98+%E7%AC%AC%E4%B8%80%E9%A2%98+3+3%2F5%C3%9725+2%2F5%EF%BC%8B37.9%C3%976+2%2F5%EF%BC%883+3%2F5%E4%B9%9F%E5%B0%B1%E6%98%AF%E4%B8%89%E5%8F%88%E4%BA%94%E5%88%86%E4%B9%8B%E4%B8%89%EF%BC%89%E7%AC%AC%E4%BA%8C%E9%A2%98+6.8%C3%9716.8%EF%BC%8B19.3%C3%973.2%E6%B3%A8%E6%84%8F%EF%BC%9A%E4%B8%80%E5%AE%9A%E8%A6%81%E7%AE%80%E7%AE%97)
简算题 第一题 3 3/5×25 2/5+37.9×6 2/5(3 3/5也就是三又五分之三)第二题 6.8×16.8+19.3×3.2注意:一定要简算
简算题
第一题 3 3/5×25 2/5+37.9×6 2/5
(3 3/5也就是三又五分之三)
第二题 6.8×16.8+19.3×3.2
注意:一定要简算
简算题 第一题 3 3/5×25 2/5+37.9×6 2/5(3 3/5也就是三又五分之三)第二题 6.8×16.8+19.3×3.2注意:一定要简算
3.6X25.4+37.9x6.4
=3.6X25.4+(25.4+12.5)X6.4
=(3.6+6.4)X25.4+12.5X6.4
=254+80
=334
6.8X16.8+(16.8+2.5)X3.2
=16.8X(6.8+3.2)+2.5x3.2
=168+8
=176
(3+3/5)×(25+2/5)+37.9×(6+2/5)
=18/5*127/5+379/10*32/5
=18/5*127/5+379/5*16/5
=18/5*127/5+(127*3-2)/5*16/5
=18/5*127/5+127*3*16/5-2/5*16/5
=18/5*127/5+127*48/5-2/5*16/5
=(18/5+4...
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(3+3/5)×(25+2/5)+37.9×(6+2/5)
=18/5*127/5+379/10*32/5
=18/5*127/5+379/5*16/5
=18/5*127/5+(127*3-2)/5*16/5
=18/5*127/5+127*3*16/5-2/5*16/5
=18/5*127/5+127*48/5-2/5*16/5
=(18/5+48/5)*127/5-2/5*16/5
=66*127/25-32/25
=8382/25-32/25
=335+7/25-32/25
=335-1
=334
6.8×16.8+19.3×3.2
=(10-3.2)*16.8+19.3*3.2
=10*16.8-3.2*16.8+19.3*3.2
=168+3.2*(19.3-16.8)
=168+2.5*3.2
=168+8
=176
收起
3.6X25.4+37.9x6.4
=3.6X25.4+(25.4+12.5)X6.4
=(3.6+6.4)X25.4+12.5X6.4
=254+80
=334
6.8×16.8+19.3×3.2
=(10-3.2)*16.8+19.3*3.2
=10*16.8-3.2*16.8+19.3*3.2
=168+3.2*(19.3-16.8)
=168+2.5*3.2
=168+8
=176