递等式计算12.7+12.,递等式计算12.7+12.5÷5; (7.5-2...

2020-12-03 21:37:55 字数 3802 阅读 5328

1楼:豪爱一萌

(1)12.7+12.5÷5

=12.7+2.5

=15.2

(2)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01

=6.58÷0.01

=658

(3)2.16÷0.9÷0.3

=2.16÷(0.9×0.3)

=2.16÷0.27

=8(4)78÷0.25÷0.4

=78÷(0.25×0.4)

=78÷0.1

=780

用递等式计算.①7680-4680÷12×5 ②53×26+470×2.6 ③7.5÷(4-3.75)×4

2楼:你大爷

①7680-4680÷12×5,

=7680-390×5,

=7680-1950,

=5730;

②53×26+470×2.6,

=530×2.6+470×2.6,

=(530+470)×2.6,

=1000×2.6,

=2600;

③7.5÷(4-3.75)×4,

=7.5÷0.25×4,

=30×4,

=120;④57

÷29×1415,=5

7×92×1415,

=4514

×1415

,=3;

⑤[35

+(49-13

)]×45,

=[35+19

]×45,=15

×45+1

9×45,

=9+5,

=14.

递等式计算(能简算的要简算).(1)9.76÷3.2×1.6(2)(8+8)×12.5(3)7.5×2.

3楼:_乵

(1)9.76÷3.2×1.6,

=3.05×1.6,

=4.88;

(2)(8+8)×12.5,

=8×12.5+8×12.5,

=100+100,

=200;

(3)7.5×2.3+2.3×3.5-2.3,=2.3×(7.5+3.5-1),

=2.3×10,

=23;

(4)10.5÷(5.3-4.6)+8.9,=10.5÷0.7+8.9,

=15+8.9,

=23.9.

递等式计算.12.7+2.85+7.3

4楼:吐笔

(1)12.7+2.85+7.3+2.15=(12.7+7.3)+(2.15+2.85)=20+5

=25;

(2)0.78×6.4-0.78×5.4

=0.78×(6.4-5.4)

=0.78×1

=0.78;

(3)12.5×4.6×0.8

=12.5×0.8×4.6

=10×4.6

=46;

(4)72÷(1.84+2.96)×1.8=72÷4.8×1.8

=15×1.8

=27.

脱式计算(能简算的要简算)(12.5+7.5)÷0.25310-10×46.18÷6+

5楼:欲猫人

(1)(12.5+7.5)÷0.25

=20÷0.25

=80(2)310-10×4

=310-40

=270

(3)6.18÷6+4

=1.03+4

=5.03

(4)2÷8

5×25

4=2×5

8×25

4=125

16(5)13.1×56+5.6×69

=131×5.6+5.6×69

=(131+69)×5.6

=200×5.6

=1120

(6)2÷23-2

3÷2=2×32-2

3×12=3-1

3=223

递等式计算.12.7+2.85+7.3+2.15  ...

6楼:匿名用户

(1)12.7+2.85+7.3+2.15=(12.7+7.3)+(2.15+2.85)=20+5

=25;

(2)0.78×

6.4-0.78×5.4

=0.78×(6.4-5.4)

=0.78×1

=0.78;

(3)12.5×4.6×0.8

=12.5×0.8×4.6

=10×4.6

=46;

(4)72÷(1.84+2.96)×1.8=72÷4.8×1.8

=15×1.8

=27.

用递等式计算,能简算的要写出简算过程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2×12.

7楼:最强黑客

(1)(2.5×6+2.5×4)÷5,

=2.5×(6+4)÷5,

=2.5×10÷5,

=25÷5,

=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,

=30;

(3)0.25×3.2×12.5,

=0.25×4×0.8×12.5,

=(0.25×4)×(0.8×12.5),=1×10,

=10;

(4)7.5÷(1.5+2.5),

=7.5÷4,

=1.875;

(5)0.6×(5+0.6)-1,

=0.6×5+0.6×0.6-1,

=3+0.36-1,

=3.36-1,

=2.36;

(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),

=3.7×1,

=3.7.

用递等式计算,能简算的要写出简算过程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2

8楼:ta剋

(1)(2.5×6+2.5×4)÷5,

=2.5×(6+4)÷5,

=2.5×10÷5,

=25÷5,

=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,

=30;

(3)0.25×3.2×12.5,

=0.25×4×0.8×12.5,

=(0.25×4)×(0.8×12.5),=1×10,

=10;

(4)7.5÷(1.5+2.5),

=7.5÷4,

=1.875;

(5)0.6×(5+0.6)-1,

=0.6×5+0.6×0.6-1,

=3+0.36-1,

=3.36-1,

=2.36;

(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),

=3.7×1,

=3.7.

1-5÷12-7/12等于多少(脱式计算)

9楼:乐为人师

1-5÷12-7/12

=1-5/12-7/12

=1-(5/12+7/12)

=1-1=0