3.3+9x(22-18.7)简算
3.3+9x(22-18.7)简算
= 3.3 + 9 x 3.3
= 3.3 x 10
= 33
3.3+9乘括号22-18.7
3.3+9×(22-18.7)
=3.3×9+3.3
=3.3×(9+1)
=3.3×10
=33
6.9 9x(22-15.5)怎么样简算
6.9+9×(22-15.5)
=6.5+0.4+9×6.5
=6.5×(1+9)+0.4
=65+0.4
=65.4
9x1/3x4/9x1/26(能简算简算)
=3x4/9x1/26
=4/3x1/26
=2/39
计算时的注意事项:
1能约分的要先约分,然后再乘,这样比较简便
2在分数乘除混合运算中,遇到除以一个数只要乘以这个数的倒数
3运用加减乘除的结合律,交换律,分配律以及拆分和拼凑进行简便运算
数学简算题能简算的要简算:1/17÷9x8+1/9x9/17
1/17÷9x8+1/9x9/17
=1/17x8/9+1/9x9/17
=8/17x1/9+1/9x9/17
=1/9x(8/17+9/17)
=1/9
22x31+69x22的简算
22x31+69x22
=22x31+22x69
=22x(31+69)
=22x100
=2200
91+9X91简算
=(1+9)×91
=10×91
=910
简算9x(9.3-5.8)+3.5
9x(9.3-5.8)+3.5
=9x3.5+3.5
=(9+1)x3.5
=35
250x9x4简算
=250x4x9
=1000x9
=9000
236 1800*(9x25)简算
236 1800*(9x25)简算
236+ 1800*(9x25)
=236+1800*225
=236+405000
=405236
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