0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100=1000
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
8.3×(6.3+3.7)
=8.3×10
=83
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=4821-1000+2
=3823
I32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
百分数的互化
百分数与小数的互化
(1)百分数化小数:去掉百分号,小数点左移两位。如:75%可化为0.75。
(2)小数化百分数:加上百分号,小数点右移两位。如:0.62可化为62%。
(30+20%)÷2
12×3÷(25+20%)
30÷(3+40%)
27÷8×16×10%
(43×20%)+【3×(1÷9)】
14×15%+25×8×(1÷4)
19.8÷(1+10%)
19.8÷(1-10%)
20÷(1-20%)
20×(1-25%)
20÷(1+20%)
20×(1+25%)
60÷(30%-25%)
120×(1-25%-40%)
605×8+3.5-44+10.9-(6.6+0.125÷12.5%)
(0.75+0.2) ÷0.25×25%+12÷0.75+7.2÷2.4
(25%-695%-12%)×36
4÷2-34%
(25÷3×18) ×30%
1049 × (1-75%)
(1+37%)×20
35÷2×75%
(54+10%)÷20
(25÷÷3×18) ×30%
(2+70%)×40
25%×((23+2%)×4)
(30+20%)÷2
12×3÷(25+20%)
30÷(3+40%)
27÷8×16×10%
(35+10%)×27
(45+50%)×3×1÷2
(43×20%)+(3×(1÷9))
27×(9×(1÷3)) ×5%
14×15%+25×8×(1÷4)
(1+48%)×2
(4×8-12) ×50%
(48÷60%)÷10
63×(1÷7) ×30%
(0.75+0.2) ÷0.25×25%
10.9-(6.6+0.125÷12.5%)
4÷2-34%
7÷3+445%
36×7÷45%
180×75%÷3×5
1700×15%÷5×3
2010÷3×45%
101 × 1÷5 - 1÷5 × 21125%
25%×((23+2%)×4)
怎样简便计算六年级百分数,六年级百分数简便计算题,100道带答案,现在每个六年级生都会做这样的题
(1/8+1/9+1/10+1/11)+(1/9+1/10+1/11+1/12)-(1/8+1/9+1/10+1/11+1/12)×(1/9+1/10+1/11)
12X3÷(25+20%)