脱式计算,能简算的要简算4 2

2021-03-17 06:39:03 字数 1338 阅读 7320

1楼:洪祎枋

(1)4.2×5.5×1.2

=23.1×1.2

=27.72

(2)4.6×1.45-1.08

=6.67-1.08

=5.59

(3)183×0.4÷24+1.65

=73.2÷24+1.65

=3.05+1.65

=4.7

(4)4.87×2.34+4.87×7.66=4.87×(2.34+7.66)

=4.87×10

=48.7

(5)19.625-(4.716+9.625)=19.625-4.716-9.625

=(19.625-9.625)-4.716=10-4.716

=5.284

(6)6.4×9+6.4

=6.4×(9+1)

=6.4×10=64

脱式计算(能简算要简算)?

2楼:妙酒

3.76+4.25+5.75 +12-

3.27-0.73+ 60.

49-36+5.51,‘=(4.25+5.

75)+12-(3.27+0.73)-36+(60.

49+5.51)+3.76

=10+12-4-36+66+3.76

=51.76

3楼:老任

解:1 . 3.76+4.25+5.75

=3.76+(4.25+5.75)

=3.76+10

=13.76

2. 12-3.27-0.73

=12-(3.27+0.73)

=12-4

=83. 60.49-36+5.51

=(60.49+5.51)-36

=66-36=30

4楼:原宇卫香旋

(54+9/13)÷9

36÷【

(5/6-1/3)×3】

5/7+8/7÷2

2-6/13÷9/2-2/3

=(54+9/13)×1/9

=36÷2/3

=5/7+4/7

=2-4/39-2/3

=54×1/9+9/13×1/9

=54=9/7

=2-(4/39+2/3)

=6+1/13

=48/39=16/13

=79/13或6

1/13

【3/5-(2/4-2/5)】÷4

=【3/5-1/10】÷4

=1/2÷4

=1/8

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