遞等式計算(能簡算的要簡算)9 6 0

2021-03-17 01:09:58 字數 2132 閱讀 7487

1樓:皽圧殷

(1)9.6÷0.4×0.25,

=24×0.25,

=6;(2)29.7÷(5.85÷0.65),

=29.7÷9,

=3.3;

(3)7.4×9.9,

=7.4×(10-0.1),

=7.4×10-7.4×0.1,

=74-0.74,

=73.26;

(4)3.84-2.7×0.64,

=3.84-1.728,

=2.112;

(5)8.68-8.68÷0.56×0.5,=8.68-15.5×0.5,

=8.68-7.75,

=0.93;

(6)4.7×4.7+4.7+4.3×4.7,=4.7×(4.7+4.3+1),

=4.7×10,

=47.

遞等式計算.(能簡算的要簡算,並寫出必要的過程).①0.125×0.25×8×4      ②(1-0.05)÷1.9

2樓:猴皆翹

①0.125×0.25×8×4,

=0.125×8×(0.25×4),

=1×1,

=1;②(1-0.05)÷1.9+0.1

=0.95÷1.9+0.1,

=0.5+0.1,

=0.6;③89

×34-715×56

=23-718

,=12

18?718,

=518;④8

17÷23+1

23×9

17=8

17×1

23+1

23×917,

=123

×(817

+917

),=1

23×1,

=123;⑤4

29×[1-(34-3

8)]=429

×(1-38),

=429×58

,=558;

⑥3.6-2.8+7.4-7.2.

=3.6+7.4-(2.8+7.2),

=11-10,=1.

遞等式計算(能簡算的要簡算).(1)2.15-2.15×0.8(2)75÷1.25(3)93÷0.25÷

3樓:甫恬謐

(1)2.15-2.15×0.8,

=2.15×(1-0.8),

=2.15×0.2,

=0.43;

(2)75÷1.25,

=75÷(25×0.05),

=75÷25÷0.05,

=3÷0.05,

=60;

(3)93÷0.25÷0.4,

=93÷(0.25×0.4),

=93÷0.1,

=930;

(4)15.6÷(3.9×0.5),

=15.6÷3.9÷0.5,

=4÷0.5,=8.

用遞等式計算(能簡算的要簡便計算) 0.175÷0.25×4.27.52-(7.7-2.48)+32.7.3.2×(2.5+12.5)6.8×

4樓:摯愛慧瑩uj卑

(1)0.175÷0.25×4

=0.7×4

=2.8

(2)27.52-(7.7-2.48)+32.7=27.52-7.7+2.48+32.7

=(27.52+2.48)+(32.7-7.7)=30+25

=55(3)3.2×(2.5+12.5)

=3.2×2.5+3.2×12.5

=0.8×(4×2.5)+0.4×(8×12.5)=0.8×10+0.4×100

=8+40

=48(4)6.8×3.7-3.7+37×0.42=6.8×3.7-3.7+3.7×4.2

=(6.8-1+4.2)×3.7

=10×3.7

=37(5)[(7.6-5.8)×0.8-1]×5.5=[1.8×0.8-1]×5.5

=[1.44-1]×5.5

=0.44×5.5

=2.42

(6)(7.8+2.2×5)÷(4-3.06)=(7.8+11)÷0.94

=18.8÷0.94=20

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