計算下面各題,能簡算的要簡算,並寫出主要的簡算過程(1)9 06 2 68 0 32(2)(3 06 0 25 2 76)

2021-05-28 05:12:58 字數 4576 閱讀 3577

1樓:褲兜最棒

(1)9.06-2.68-0.32,

=9.06-(2.68+0.32),

=9.06-3,

=6.06;

(2)(3.06÷0.25+2.76)×

0.2,

=(12.24+2.76)×0.2,

=15×0.2,

=3;(3)18-(3

5+4÷25),

=18-(0.6+4×52),

=18-(0.6+10),

=18-10.6,

=7.4;

(4)2.7×1.25+5.3×125%,=2.7×1.25+5.3×1.25,

=(2.7+5.3)×1.25,

=8×1.25,

=10.

計算下面各題,能簡算的要簡算,並寫出主要的計算過程

2樓:小勝k坼

①dao7.8-8.75+2.2-1.25=(版7.8+2.2)權-(8.75+1.25)=10-10

=0②13.2÷(9.4-5)+5.32

=13.2÷4.4+5.32

=3+5.32

=8.32

③7-37-4

7=7-(37+4

7)=7-1

=6④13

17-(5

17+1

10)=1317

-517

-110

=817

-110

=63170⑤15

+(56

-1318)=1

5+(15

18-1318)

=15+19

=1445

計算下面各題,能簡算的要簡算.9.5×1.06-2.52÷2.43.4×0.26+0.74×3.4 1.25×32×0.87.09×99+7.0968.

3樓:手機使用者

(1)9.5×1.06-2.52÷2.4

=10.07-1.05

=9.02;

(2)3.4×0.26+0.74×3.4

=3.4×(0.26+0.74)

=3.4×1

=3.4;

(3)1.25×32×0.8

=(1.25×0.8)×32

=1×32

=32;

(4)7.09×99+7.09

=7.09×(99+1)

=7.09×100

=709;

(5)68.5+31.5÷(0.29+0.41)=68.5+31.5÷0.7

=68.5+45

=113.5;

(6)0.4×5÷0.4×5

=2÷0.4×5

=5×5

=25.

一、計算下面各題,能簡算的要簡算。⑴1/5-2/9×3/10 = = = =

4樓:匿名使用者

可以用簡便方法,先把五分之一變成2/10,在與3/10提取1/10.這樣就可以用簡便方法計算了,下面通過**分析這道題。

5樓:流星雨中的野鶴

你好,很高興為你解答!

1/5-2/9×3/10

=1/5-1/3×1/5

=1/5×(1-1/3)

=1/5×2/3

=2/15

6樓:匿名使用者

1/5-2/9×3/10

=1/5-1/15

=3/15-1/15

=2/15

計算下面各題,能簡算的要簡算 14×75-624÷39(7.6-3.6÷2)×1.545-(45-12)4.68×78+

7樓:奮兒

(1)14×75-624÷39,

=1050-16,

=1034;

(2)(7.6-3.6÷2)×1.5,

=(7.6-1.8)×1.5,

=5.8×1.5,

=8.7;

(3)4

5-(45-1

2),=45

-45+12

,=0+12,

=12;(4)4.68×78+4.68×22,

=4.68×(78+22),

=4.68×100,

=468.

計算下面各題,能簡算的要簡算。 (1)3.8x4.2+38x0.58 (2)36[(5/6-2/3

8樓:樂為人師

(1)3.8x4.2+38x0.58

=38x0.42+38x0.58

=38x(0.42+0.58)

=38x1

=38(2)36×[(5/6-2/3)x3]=36×[1/6x3]

=36×1/2

=18(3)1.25x32x2.5

=(1.25x8)x(4x2.5)

=10x10

=100

(4)72000÷125÷8

=72000÷(125x8)

=72000÷1000=72

9樓:匿名使用者

38×(0.42+0.58)=3.8

181.25×4×(8×2.5)=20

72000÷(125×8)=72

計算下面各題,能簡算的要簡算. 8.5×(2.36+2.42)÷0.25 3.9÷1.3×6 4.25×6.3+3.7×4.25 2

10樓:手機使用者

(du1)8.5×

zhi(2.36+2.42)÷0.25,

=8.5×4.78÷0.25,

=40.63÷0.25,

=162.52;

dao(2)3.9÷1.3×6,

=3×6,

=18;

(3)4.25×6.3+3.7×4.25,=4.25×(6.3+3.7),

=4.25×10,

=42.5;

(4)205×99,

=205×(100-1),

=205×100-205×1,

=20500-205,

=20295;

(5)25.6-7.49-2.51,

=25.6-(7.49+2.51),

=25.6-10,

=15.6;

(6)2.5-(6.8-4.9)×0.8,=2.5-1.9×0.8,

=2.5-1.52,

=0.98.

計算下面各題,能簡算的要簡算。

11樓:回憶的沙漏

(2/3-1/4+5/12)×32

=2/3×32-1/4×32+5/12×32=21又1/3-8+13又1/3

=13又1/3+13又1/3

=26又2/3

7.05*30+65*0.75-0.75

=0.75*300+65*0.75-0.75*1=0.75*(300+65-1)

=0.75*364

=259.5

1-(5/7+3/14÷3/4)*2/7

=1-(5/7+2/7)*2/7

=1-1*2/7

=1-2/7

=5/7

【數學愛好者、數學之美2和語數外物化的團員回憶的沙漏038為你解答】【有什麼不明白可以對該題繼續追問】

【如果滿意,請及時選為滿意答案,謝謝!】

12樓:科幻怪怪

1):(2/3-1/4+5/12)x32

=(8-3+5)/12x32

=10/12x32

=80/3

=26又2/3

2):7.05x30+65x0.

75-0.75=211.5+0.

75(65-1) 提取公因式0.75=211.5+0.

75x4/3x64x3/4=211.5+48

=259.5

3):1-(5/7+3/14除3/4)x2/7,除的兩邊都可以消去分子的3,分母消去一半,即乘1/2,

=1-(5/7+1/7除1/2)x2/7 可以口算

=1-(5/7+2/7)x2/7

=1-2/7

5/7。

13樓:王佩鑾

1)、3分之2-4分之1+12分之5)×32=2/3-1/4+5/12

=8/12-3/12+5/12(通分)

=(8-3+5)/12(分子相加減)

=10/12(約分)

=5/6

2)7.05×30+65×0.75-0.75=211.5+48.75-0.75

=211.5+48

=259.5

3)1-(7分之5+14分之3÷4分之3)×7分之2=1-(5/7+3/14*4/3)*2/7=1-(5/7+2/7)*2/7

=1-7/7*2/7

=1-2/7

=5/7

計算下面各題,能簡算的要簡算

31.9 18 8 31.9,31.9 18 8 31.9 10,319 21 13 2 5 911,21 11 15 911,21 15 11 119,35 2 3 215 45,23 45 2 15 45,30 6,36 1 1 100 70 27,1 7 10 27,310 72 2120 1...

計算下面各題。能簡算的要簡算

15 2 3 3 5 15 2 3 15 3 5 10 9 19 5 6 1 8 5 12 3 7 5 6 13 24 3 7 7 24 3 7 1 8 計算下面各題,能簡便計算的要簡便計算。3 5 3 4 5 6 8 9 2 7 5 7 15 8 3 4 1 4 3 5 3 4 5 6 8 9 2...

計算下面各題,能簡算的要簡算

1 7 125 8 7 125 8 7 1000 7000 2 120 20 2 45 120 40 45 80 45 125 3 35 32 128 32 35 32 4 35 36 1260 4 43 36 36 57 43 57 36 100 36 3600 5 640 4 16 8 640 ...