用遞等式計算能簡算的要簡算

2021-03-03 20:37:53 字數 2941 閱讀 6154

1樓:匿名使用者

(1)5.03-2.5+0.96,

=2.53+0.96,

=3.49;

(2)35.72-(5.9+5.72),

=35.72-5.9-5.72,

=35.72-5.72-5.9,

=30-5.9,

=24.1;

(3)25-4.7+5.3,

=20.3+5.3,

=25.6;

(4)1.3+2.83+8.7+0.17,=(1.3+8.7)+(2.83+0.17),=10+3,

=13;

(5)2.47-2.2-3.8+7.53,=(2.47+7.53)-(2.2+2.8),=10-5,=5.

用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2×12.

2樓:最強黑客

(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.

用遞等式計算(能簡算要簡算)

3樓:強肚很大

(3/4-2/3)÷

(1/6+1/8)

=(9/12-8/12)÷(4/24+3/24)=1/12÷7/24

=1/12×24/7

=2/7

12÷(2/3+5/6)

=12÷(4/6+5/6)

=12÷9/6

=12×2/3

=83-(1/8+3/4÷3/8)

=3-1/8-3/4×8/3

=3-1/8-2

=1-1/8

=7/8

5/8×2/7+5/8÷7/5

=5/8×2/7+5/8×5/7

=5/8×(2/7+5/7)

=5/8×1

=5/8

1/5+4/9×3/8+5/6

=1/5+1/6+5/6

=1/5+1

=6/5

4樓:小老周

(3/4-2/3) / (1/6+1/8)=(18/24-16/24) / (4/24+3/24)=2/24 / 7/24

=2/24x24/7

=2/7

12 / (2/3+5/6)

=12 / (4/6+5/6)

=12 / 11/12

=12x12/11

=13 1/11

5樓:

懸賞太低 你正考試 所以算了

用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2

6樓: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.

用遞等式計算,能簡算的要簡算.(1)100.18-9.6+18.53(2)0.963+23.89-0.063(3)2.5×0.3÷2.5×0.3(

7樓:我是微涼

(1)100.18-9.6+18.53,

=90.58+18.53,

=109.11;

(2)0.963+23.89-0.063,=(0.963-0.063)+23.89,=0.9+23.89,

=24.79;

(3)2.5×0.3÷2.5×0.3,

=2.5÷2.5×0.3×0.3,

=1×0.3×0.3,

=0.09;

(4)2.8×10.1,

=2.8×(10+0.1),

=2.8×10+2.8×0.1,

=28+0.28,

=28.28;

(5)51×1.2-1.2,

=(51-1)×1.2,

=50×1.2,

=60;

(6)0.36×(15.23-9.63),=0.36×5.6,

=2.016.

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