第1个回答 2018-08-22
8.37-3.25-(1.37+1.75)
=8.37-1.37-(3.25+1.75)
=7-5
=2
3.4×99+3.4
=3.4×99+3.4×1
=3.4×(99+1)
=3.4×100
=340
(125+125)×8
=125×8+125×8
=1000+1000
=2000
25×36
=25×4×9
=100×9
=900
(2.5+12.5)×40
=2.5×40+12.5×40
=100+500
=600
6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5×10
=65
第2个回答 2020-01-29
0.4x125x25x0.8
=(0.4x25)X(125x0.8)
=100x100
=1000
1.25x(8+10)
=1.25x8+1.25x10
=10十12.5
=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
8991.2
1.24x8.3+8.3x1.76
=8.3x(1.24+1.76)
=8.3x3
=24.9
933-157-43
=933-(157+43)
=933-200
=733
第3个回答 2020-03-13
就是有一些那个题出的太简单了,应该难一点就好了,因为哪一点的话比较好一点,让人学习的话更快了计算那些计算题儿就好多了。
第4个回答 2020-03-02
0.25x1.25x32
=0.25x1.25x(8x4丿
=0.25X4x1.25x8
=1X10
=10