脫式計算,能簡算的用簡算

2021-03-04 08:48:57 字數 3453 閱讀 9502

1樓:匿名使用者

(1)5.5×17.3+6.7×5.5

=5.5×(17.3+6.7)

=5.5×24

=132;

(2)1.5×105

=1.5×(100+5)

=1.5×100+1.5×5

=150+7.5

=157.5;

(3)9.07-22.78÷3.4

=9.07-6.7

=2.37;

(4)3.8+4.29+2.1+4.2

=(3.8+4.2)+(4.29+2.1)=8+6.39

=14.39;

(5)2.65×1.7+1.35×1.7

=(2.65+1.35)×

1.7=4×1.7

=6.8;

(6)23.4÷7.8-2.1

=3-2.1

=0.9;

(7)0.75×18÷0.15

=13.5÷0.15

=90;

(8)2.5×3.2×1.25

=2.5×(4×0.8)×1.25

=(2.5×4)×(0.8×1.25)

=10×1

=10;

(9)0.26×2.5+0.74×2.5+2.5=(0.26+0.74+1)×2.5

=2×2.5

=5;(10)18.09-7.5×(0.14+1.06)=18.09-7.5×1.2

=18.09-9

=9.09;

(11)9÷[(38.02+1.98)×0.5]=9÷[40×0.5]

=9÷20

=0.45;

(12)26×20.2-8.4-1.8

=525.2-8.4-1.8

=516.8-1.8

=515;

(13)90-78.09+4.23

=11.91+4.23

=16.14;

(14)32.34÷2.l×0.45

=15.4×0.45

=6.93;

(15)15.32-1.8×5-3.46

=15.32-9-3.46

=6.32-3.46

=2.86;

(16)(9-2.78)×15÷3.11

=6.22×15÷3.11

=93.3÷3.11

=30;

(17)(1.36+4.85)÷(0.15×6)=6.21÷0.9

=6.9;

(18)3.6÷[(1.3+0.6)×5]=3.6÷[1.9×5]

=3.6÷9.5

=3695

;(19)0.01+1.01×99

=0.01+(1+0.01)×99

=0.01+1×99+0.01×99

=0.01×(1+99)+99

=0.01×100+99

=1+99

=100;

(20)89.3×43+38×89.3+893×1.9=89.3×43+38×89.3+89.3×19=89.3×(43+38+19)

=89.3×100

=8930;

(21)10.01×101-10.01

=10.01×(101-1)

=10.01×100

=1001;

(22)38×7.3+27×3.8

=3.8×73+27×3.8

=3.8×(73+27)

=3.8×100

=380;

(23)32×1.25×0.25

=(4×8)×1.25×0.25

=(4×0.25)×(8×1.25)

=1×10

=10;

(24)38.75-(24.5+8.75)=38.75-24.5-8.75

=38.75-8.75-24.5

=30-24.5

=5.5.

脫式計算(能簡算要簡算)?

2樓:妙酒

3.76+4.25+5.75 +12-

3.27-0.73+ 60.

49-36+5.51,『=(4.25+5.

75)+12-(3.27+0.73)-36+(60.

49+5.51)+3.76

=10+12-4-36+66+3.76

=51.76

3樓:老任

解:1 . 3.76+4.25+5.75

=3.76+(4.25+5.75)

=3.76+10

=13.76

2. 12-3.27-0.73

=12-(3.27+0.73)

=12-4

=83. 60.49-36+5.51

=(60.49+5.51)-36

=66-36=30

4樓:原宇衛香旋

(54+9/13)÷9

36÷【

(5/6-1/3)×3】

5/7+8/7÷2

2-6/13÷9/2-2/3

=(54+9/13)×1/9

=36÷2/3

=5/7+4/7

=2-4/39-2/3

=54×1/9+9/13×1/9

=54=9/7

=2-(4/39+2/3)

=6+1/13

=48/39=16/13

=79/13或6

1/13

【3/5-(2/4-2/5)】÷4

=【3/5-1/10】÷4

=1/2÷4

=1/8

希望我答

幫助純手打辛苦~

脫式計算,能簡算要簡算

5樓:之蘿蘿蔔

(1)33.5-5.3-4.7+16.5,=(33.5+16.5)-(5.3+4.7),=50-10,

=40;

(2)9900÷25÷4,

=9900÷(25×4),

=9900÷100,

=99;

(3)1÷(3 5

+310

),=1÷9

10,=10 9

;(4)24×(2 3

+1 6

-3 8

),=24×2 3

+24×1 6

-24×3 8

,=16+4-9,

=20-9,

=11;

(5)1+0.45÷0.9-7 8

,=1+0.5-7 8

,=1.5-7 8

,=0.625;

(6)20

17-(3

17+2 3

),=20 17

-317

-2 3

,=1-2 3

,=1 3.

脫式計算能簡算的要簡算

zhi1 5.4 86.5 16.25 0.5 dao 5.4 86.5 32.5 5.4 54,291.6 專 2 3 3 2 1021 2 7 3 5 7 2 7 3 5 7 2 7 3 1,2 3 95.6 18 4.4 18,95.6 4.4 屬18,100 18,1800 4 15 16 ...

7脫式計算,能簡算的要簡算,575957脫式計算,能簡算的要簡算

5 7 5 9 5 7 5 7x 1 5 9 5 7x4 9 20 63 希望能幫到你!1 8x9 7 5 7 8能簡算的要簡算 1 8x9 7 5 7 8可以先將裡面的5 7 8化成5 7 1 81 8x9 7 5 7 1 8 1 8 9 7 5 7 1 8 16 7 2 7 1 8x9 7 5 ...

請脫式計算,能簡算的要簡算4 85 3 62 1 38 5 1516 7 (6 2 9 58 33 25 0 25

1 4.85 3.62 1.38 5.15,du zhi4.85 5.15 3.62 1.38 dao專 10 5,15 2 16.7 6.2 9.5 8.3,16.7 15.7 8.3,1 8.3,8.3 3 3.25 屬0.25 1.75 0.25,13 7,20 4 10.52 3.52 1....