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六年级数学计算(解方程)
1、解方程:
+X = X = 40 2X– =
15÷X = X–X = X+X = 18
5.5x–3x = 1.75 X×(1+)= 25 X+ =
X× = (1–)X = X÷ =
X = 15× X× = 24× X×(+)=
X×× = 10 X×× = 18 X× = 8×
X×× = 4 ×x+×45 = 12 X× = 18×
小学数学分数混合运算习题
[1–(+)]÷ ÷×7 –×÷3
(1–×)÷ –(+) ++
25÷(–) ×– +–
(–)÷(+) [(1–)×]÷4 [1–(+)]÷3.5
[(1–)×]÷4 (–)÷ (+)÷(1–)
×[÷(+)] 8–÷× 12÷(1–)
分数简便运算题:
÷3+× ×+÷7 ++÷
72×(–+) 4–÷– 2–÷–
+×+ +÷+ +×+
×(9+)– 2–×– ÷+×
30×(+–) +×+ +÷+
6–×– 12×(–+) ×+÷5
4–÷– (–)×70 48×(–+)
÷9+× 5–– 24×(+)
(+)×60–27 ×8+×2 15×+15×
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