用遞等式計算能簡便的就簡便運算

2021-03-04 04:52:12 字數 1532 閱讀 8122

1樓:腐姐控攪基

(1)326×du5-26×5

=(zhi326-26)dao×5

=300×5

=1500;

回(2)592-348+52

=244+52

=296;

(3)382×4-273

=1528-273

=1255;

(4)963-963÷答3

=963-321

=642;

(5)562+241+128

=562+128+241

=690+241

=931;

(6)743-136-364

=743-(136+364)

=743-500

=243.

用遞等式計算.(1)26+37-50(2)2.5×1.4-8.5÷5(3)(34-18

2樓:為愛痴狂

(1)26+37-50

=63-50

=13(2)2.5×1.4-8.5÷5

=3.5-1.7

=1.8

(3)(版34

-18)÷5

6=58÷5

8=1(4)1

15÷[(23+1

5)×權126

]=115÷[13

15×126]

=115

÷130=2

3樓:蘭莞戈海白

解答du:解:(1)26+37-50

=63-50

=13(2)2.5×

zhi1.4-8.5÷dao5

=3.5-1.7

=1.8

(3)(34

-18)÷

56=5

8÷58

=1(4)115

÷[(23+

15)×1

26]=1

15÷[

1315×1

26]=1

15÷130=2

計算下面各題(能簡便計算的要簡便計算).(1)12×(124-85)÷26(2)5.5×17.3+6.7×5.5(3) 7

4樓:懷念ck°藈酹

(1)抄12×(124-85)÷26

=12×39÷26,

=468÷26,

=18;

(2)5.5×17.3+6.7×5.5

=(17.3+6.7)×5.5,

=24×5.5,

=132;

(3)7

13+5 6

+613

+1 6

=(713

+613

)+(5 6

+1 6

),=1+1,

=2;(4)1-3

13÷9

26-1 5

=1-2 3

-1 5

,=1 3

-1 5

,=215.

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