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用递等式计算(四数下册) 姓名
980 — 436+ 75
125
X 5- 15
150
+ 42 X 37
960+ 360 - 90
80
X 50 — 35宁 5
105
+ 360 - 20- 3
800— 700 - 25 X 4
72
—4X6-3
42
+ 6X (12 — 4)
(270 — 180) - 30
56
—(25 + 17)
(75
+ 360) - (20 — 5)
75+ 360 - (20 — 5)
812
-(532 — 36 X 14)
18
X (420 + 360- 90)
(124 — 85) X 12-26
75
+ 360-40 — 5
1500
-25— (18 + 8)
(124 — 85) X 12-26
28
+ (32 - 4 — 3)
18
X (400 — 120X 2)
(280 + 80 - 4) X 12
(72
—4) X (6 - 3)
75
+ 360 - (20 — 5)
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简便计算
25 X 42 X 4
68
X 125X 8
49
4X 25X 16X 25
(25+15)
X 4
(125X 25)X 4
(125 + 17 ) X 8
25
85 X 82 + 82 X 15
49
X99+49
64
87X 99 + 87
79
X 25 + 25
76
X 49+49X 51
(