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六年级上册数学计算题专项练习
1、直接写出复数。(20分)
×= 1÷= ÷8= 7×= ×12=
×= -= + ÷= 14÷=
12÷= 1÷1%= 9.5+0.5= += 0÷×2=
1-= ×= ÷= -= ××9=
4.9:6.3= += ×= 1――=
+= ÷= 9÷= ××=
= = = = =
= = = = =
×= ÷= 2.5×0.4 = 1.5÷0.05= 45+÷9=
1-÷= 3×÷3×= 25××4= 1-=
×= 1÷= ÷60%= ×15=
-= 6.8÷10%= 4.5+= ×=
301-199= 0.24×300= ÷= 2.5+0.25= 9.5-9.5×0=
- = 0.3÷6= 2.4×= 4.2÷ = 1.25×0.7×8=
÷30= 1.4÷3.5= ×1.3+×3.7= (+)×12=
2、怎样简便就怎样算。(40分)
(1)3-- (2)×+×
(3)×+÷ (4)18×(+)
(1)×7+×5 (2)(-)×24-)
(3)(×+)÷ (4)÷[(+)×]
(32×+17)÷ (25+)÷+ ×+×+
()
①(21×+×21)× ②(99+)÷9 ③×÷
④÷[(+)×] ⑤(+)×30 ⑥+3÷
×-÷ 4-- ×58+×41+
××- ×+÷ ÷[(-)÷]
235 - 135÷18 ×153 – 0.6×53
(+)÷+ 10 - - +
25×÷× 13.09-8.12-4.88 12×103-4500÷75
×[÷(×)] (+)×15×11 37.5+19.5÷2.5×4
(- )×60 36× 0.65×101
×+× 27.5×3.7-7.5×3.7 ÷+×
×101- × 99 + ×-÷
[1–(+)]÷ –×÷3
(1–×)÷ ÷×7
–(+) ×–
25÷(–) +–
[(1–)×]÷4 ++
×[÷(+)] 12÷(1–)
[(1–×)÷ [(1–)×]÷4
8–÷× ×–÷
(–)÷ (+)÷(1–)
÷3+× ++÷
72×(–+) 2–÷–
+×+ +×+
×+÷7 4–÷–
×(9+)– ÷+×
+÷+ 2–×–
30×(+–) +÷+
6–×– ×+÷5
×+× (+)×48 3--
×+×0.6 ×+÷ ×101-
28×(+-) ×51 90×
×101- × 99 + ×-÷
2.5×32×1.25 9.6÷3.2÷3 15.2÷0.25÷4
28×21.6-2.8×16 5.6×1.7+0.56×83
933-15.7-4.3 41.06-19.72-20.28
700÷14÷5 18.6÷2.5÷0.4
5.3×+2.7×25% 0.67×10.1-6.7
3、解方程。(20分)
(1)χ= (2)χ×(+)=
(1)χ-χ= (2)6×-χ=
8x-×3= (x-6)×=25
①χ+= ②χ-χ=12 ③χ+10%χ=110
5X-3×= +X=
①χ+60%χ=28
1.75x-0.5x=6.25 x-=×30%
X+X= X + X = 4 X+X=20
6X+5 =13.4 4 X-6=38 X+=
4 X-3 ×9 = 29 5X-3×= 4X-6×=2
0.36×5- X = X - 0.8 X = 16+6 ( X - 4.5) = 7
x-x=14 +x= 7-=2x
X+5=X X += 5 x -x=×45
X×=20× 50% X + X = 3.6 25% X + 15%X =
0.36×5- X = X - 0.8 X = 16+6 ( X - 4.5) = 7
X×( + )= X-0.375 X = 20 X– 8.5= 1.5
X - X -4= 21 4+0.7X=102 X - 25% X = 10
6
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