几道小学数学题 计算题 要有过程哦 有分加!!!
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1/(1-四分之3)
=1÷1/4
=4
2.(3分之2+十五分之2)*45
=2/3X45+2/15X45
=30+6
=36
3.
2.1*0.5/4.2
=1.05÷4.2
=0.25
4.
二十五分之三/十分之一+五分之一
=6/5+1/5
=5分之7
5.
(0.125*8-0.5)*4
=(1-0.5)X4
=0.5X4
=2
6.
1+0.45/0.9-0.75
=1+0.5-0.75
=0.75
7.
168.1/(4.3*2-0.4)
=168.1÷8.2
=20.5
8.
1.21*42-(4.46+0.14)
=50.82-4.6
=46.22
=1÷1/4
=4
2.(3分之2+十五分之2)*45
=2/3X45+2/15X45
=30+6
=36
3.
2.1*0.5/4.2
=1.05÷4.2
=0.25
4.
二十五分之三/十分之一+五分之一
=6/5+1/5
=5分之7
5.
(0.125*8-0.5)*4
=(1-0.5)X4
=0.5X4
=2
6.
1+0.45/0.9-0.75
=1+0.5-0.75
=0.75
7.
168.1/(4.3*2-0.4)
=168.1÷8.2
=20.5
8.
1.21*42-(4.46+0.14)
=50.82-4.6
=46.22
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