六年级数学,10道简便计算题带答案谢谢哦∩_∩?
1、2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
2、31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(10.7-0.7)
=3.15×10
=31.5
3、2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
4、0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
5、18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)
=18.6×10
=186
6、1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
7、52.5×2.9+5.45
=5.25×29+5.25+0.2
=5.25×(29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
8、0.92×15+0.08×15
=(0.92+0.08)×15
=1×15
=15
9、25×32×125
=25×4×8×125
=(25×4)×(8×125)
=100×1000
=100000
10、4000÷125÷8
=4000÷(125×8)
=4000÷1000
=4
六年级或中考数学计算时结果是假分数,要化成带分数吗?(急!!!)
- 希望得到准确的答案!
- 这个要看你是哪个年级段的学生如果是小学生,老师一般会要求把假分数化成带分数如果上了中学就可以把假分数作为最后答案。 六年级或中考数学计算时结果是假分数,不妨把假分数化成带分数,不留遗憾