脱式计算,能简算的要简算1118 910 1118

2021-03-17 06:33:32 字数 1961 阅读 1991

1楼:手机用户

(1)11

18×9

10+11

18÷10

=1118

×(910

+110

)=11

18×1

=1118

(2)3-59×7

20-11

36=3-7

36-11

36=3-(7

36+1136)

=3?1

2=21

2(3)9.9×17.6

=(10-0.1)×17.6

=10×17.6-1.76

=174.24

(4)8.6-(5.6+4.8)÷1.3

=8.6-10.4÷1.3

=8.6-8

=0.6

(5)4

9÷[1?(25+1

10)×43]

=49÷[1-12×4

3]=49

÷13=43

脱式计算,能简算的要简算 240÷15÷4 129+318+71    304+278 25×(17×8) 700-300÷25

2楼:妖月

(du1)240÷15÷4,

zhi=240÷(15×dao4),

回=240÷60,

=4;(2)129+318+71,

=(129+71)+318,

=200+318,

=518;

(3)304+278,

=(300+4)+(300-22),

=300+300-(22-4),

=600-18,

=582;

(4)25×(17×8),

=25×8×17,

=(25×4)×(2×17),

=100×34,

=3400;

(5)(答614+346)÷48,

=960÷48,

=20;

(6)94×(205-188),

=94×17,

=1598;

(7)25×32×125,

=25×4×8×125,

=(25×4)×(8×125),

=100×1000,

=100000;

(8)420÷35,

=420÷(7×5),

=420÷7÷5,

=60÷5,

=12.

脱式计算,能简算的要简算 22.3-2.45-5.3-4.55 920÷[12×(25+13)] [43.3×(2-75%)+7]×12

3楼:手机用户

(1)22.3-2.45-5.3-4.55,=(22.3-5.3)-(2.45+4.55),=17-7,

=10;

(2)9

20÷[1

2×(25+1

3)],

=920

÷[12

×1115

],=9

20÷1130,

=2722

;(3)[43.3×(2-75%)+7]×12,=[43.3×1.25+7]×12,

=[54.125+7]×12,

=61.125×12,

=30.5625;

(4)9

20×103?9

20×3,

=920

×(103?3),

=920

×100,

=45;

(5)5

9÷5+4

9÷4,=19

+19,=2

9;(6)12?6

13÷9

26?23,

=12-43-2

3,=12-(43+2

3),=12-2,

=10.

脱式计算:能简算的要简算。,脱式计算:一、能简算的要简算。③4/7×5/9+3/7×5/9 = = = =

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