五上数学寒假作业.doc
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五年级数学寒假作业
一、列竖式计算:(带★的要验算)
2.18×3.4= 0.419×2.5= 82.7×1.32= ★4.5×0.72=
3.28÷1.6= ★57.6÷0.24= 79.2÷18= 0.3296÷0.32=91.2÷0.38= 5.13÷27=÷7.5= 1234.8÷63=÷0.018= 10÷5.9= ÷0.64=÷4.5=168÷28= 156÷24= 138÷15=10625÷25=3.06×7.4=??????? ★70.3×0.85=???? ?0.26×9.14= 45.9×5.7=
二、递等式计算。(能简算的要简算)
1.6×3.9×1.25 35.72÷0.047÷0.32 0.138×6.4÷0.12
1÷0.25×(1.28÷3.2)(5.84 – 3.9)÷0.4+0.15 ×0.924.87×2.34+48.7×0.266 2.5×(3.8×0.04)? 7.69×10.1
(8×5.27)?×1.25? ?? ? ? 46×0.33+54×0.33? ?0.25×39+0.25
8+99×9.8? 0.125×72 ?? ? 3.14÷0.4÷2.5
4.65×32+2.5×46.5+0.465×430 1.8×(1.4 – 0.26)÷24.38÷(36.94+34.3×0.2)÷1.7 –3.75÷1.5 1.25×88
3.6+(7.43–3.83)×2.5 17.64÷4.9+6.73 8.99×1.2
2.3+3.91÷(22 –19.7) 30–2.16÷1.8 3.4÷(1.2+0.5)×1.5
(2.1 –0.32)×(2.9+4.6) 8.7×9.98 2.04÷0.17×2.7
4.75+3.25×2.4+7.6 (3.12+0.9)÷(0.6÷0.1) 72×0.81+10.4
50.4×1.9-1.8 3.76×0.25+25.8 7.06×2.4-5.7
0.75×18÷0.15 2.07÷0.23÷0.45 7.28+3.2÷2.5
1.08×0.8÷0.27 2.05÷0.82+33.6 21.36÷0.8-12.9
44.28÷0.9÷4.1 9.07-22.78÷3.4 3.8+4.29+2.1+4.2
5.5×17.3+6.7×5.5 (45.9-32.7)÷8÷0.125 9.7×99+9.7
5.6÷1.25÷0.8÷2.5÷0.4 17.8÷(1.78×4) 18-1.8÷0.125÷0.8
0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6
3.14×0.68+31.4×0.032 800÷25 2000÷125
13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7 2.3×16+2.3×23+2.3
101×0.87-0.91×87 10.7×16.1-15.1×10.7 3.65×4.7-36.5×0.37
99+999+9999+99999 7.755-(2187+0.755) 9000÷125
3.9×0.25+4.1÷4 4.56÷0.5-1.56×2 4.63×2-0.63÷0.5
99×99+199 88×9-99×8 51×23+51×79-102
38×190-380×9 (7.7+1.54)÷0.7 3200÷4÷25
三、解方程
4(x+0.3)=4.8 1.2x-0.8x=9.6 20+x=36
7x-55=59 0.7x=4.2
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