計算下面各題,能簡便的要用簡便方法計算150 100 25 22(23 2748 12 2138 44

2021-04-21 08:35:08 字數 2241 閱讀 9978

1樓:手機使用者

(1)150-100÷25

=150-4

=146;du

(2)22×

zhi(23+27)

=22×50

=1100;

(3)48÷12×2

=4×2

=8;(4)138+44+62

=138+62+44

=200+44

=244;

(5)37×5×2

=37×(5×2)

=37×10

=370;

(6)14×45

=(7×2)×dao45

=7×(2×45)

=7×90

=630.

計算下面各題,能簡便的要用簡便方法計算21÷(13+25)÷911920÷[12×(45+25)]5.65-6.29+5.35-2.713.7×99

2樓:桓廣英

(1)21÷(13+2

5)÷9

11=21÷11

15÷9

11=21÷(11

15×911)

=21÷3

5=35;

(2)9

20÷[1

2×(45+2

5)]=920

÷[12×65

]=920÷35=3

4;(3)5.65-6.29+5.35-2.71=(5.65+5.35)-(6.29+2.71)=11-9

=2;(4)3.7×99+3.7

=3.7×(99+1)

=3.7×100

=370.

計算下面各題.(能簡便的要用簡便方法計算)2.3+3.91÷(22-19.7)21.6÷[64.8-(48.6-2.7×2)]0.25×0

3樓:手機使用者

(1)2.3+3.91÷(22-19.7)=2.3+3.91÷2.3

=2.3+1.7

=4(2)21.6÷[64.8-(48.

6-2.7×2)]=21.6÷[64.

8-(48.6-5.4)]=21.

6÷[64.8-43.2]

=21.6÷21.6

=1(3)0.25×0.03×4

=(0.25×4)×0.03

=1×0.03

=0.03

0.13×3.89+0.13×5.11

=0.13×(3.89+5.11)

=0.13×9

=1.17

(5)10.1×87

=(10+0.1)×87

=10×87+0.1×87

=870+8.7

=878.7

計算下面各題,能簡便的要用簡便方法計算.114×(14+112) 725×103-7...

4樓:尛辰丶

①114

×du(zhi14

+112

)dao

=114

×(312

+112)=1

14×13=1

42②7

25×103-7

25×2-7

25=7

25×(103-2-1)

=725

×100

=28③72

17+(5

18-217)

=7217

+518

-217

=(72

17-2

17)+5

18=7+5

18=7518

計算下面各題,能簡便的要用簡便方法計算. 1.3+0.94+0.06+7.7 6.27÷0.3+3 12.5×0.48

5樓:你大爺

(1)1.3+0.94+0.06+7.7,=(1.3+7.7)+(0.94+0.06),=9+1,

=10;

(2)6.27÷0.3+3,

=20.9+3,

=23.9;

(3)12.5×0.48×0.8,

=(12.5×0.8)×0.48,

=10×0.48,

=4.8;

(4)5.2×[(1.3+2.1)÷0.2],=5.2×[3.4÷0.2],

=5.2×17,

=88.4.

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