递等式计算(能巧算的要巧算)
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/16 08:11:51
递等式计算(能巧算的要巧算)
(1) 548-148×2 (2)45×4×9
(3) 184+647+316+343
(4) 804÷6×4
(5) 856×4-156÷4
(6)(1046-849)×200
(1) 548-148×2 (2)45×4×9
(3) 184+647+316+343
(4) 804÷6×4
(5) 856×4-156÷4
(6)(1046-849)×200
![递等式计算(能巧算的要巧算)](/uploads/image/z/3706008-24-8.jpg?t=%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%88%E8%83%BD%E5%B7%A7%E7%AE%97%E7%9A%84%E8%A6%81%E5%B7%A7%E7%AE%97%EF%BC%89)
你好,txcshp
(1)548-148×2
=548-296
=548-300+4
=248+4
=252
(2)45×4×9
=180×9
=1620
(3)184+647+316+343
=(184+316)+(647+343)
=500+990
=1490
(4)804÷6×4
=134×4
=536
(5)856×4-156÷4
=3424-39
=3385
(6) (1046-849)×200
=197×200
=39400
(1)548-148×2
=548-296
=548-300+4
=248+4
=252
(2)45×4×9
=180×9
=1620
(3)184+647+316+343
=(184+316)+(647+343)
=500+990
=1490
(4)804÷6×4
=134×4
=536
(5)856×4-156÷4
=3424-39
=3385
(6) (1046-849)×200
=197×200
=39400