人教版五年级数学上册寒假计算专项复习（含答案）

人教版五年级数学上册计算专项复习一、直接写出得数①3.2×0.1= ②150×0.04= ③5.6+4.4=

④0.4×0.4= ⑤7.7÷11= ⑥5.8a−2.3a=

⑦0.18÷0.9= ⑧0.48÷0.8= ⑨1.2×0.5=

⑩300×0.02= ⑪3.7+6.3= ⑫0.5×0.6=

⑬8.8÷22= ⑭7.2x−4.2x= ⑮0.36÷0.6=

⑯0.63÷0.7= ⑰2.5×0.4= ⑱400×0.05=

⑲2.9+7.1= ⑳0.7×0.8= ㉑9.9÷33=

㉒9.5b−3.5b= ㉓0.49÷0.7= ㉔0.81÷0.9=

㉕3.6×0.2= ㉖250×0.03= ㉗4.5+5.5=

㉘0.9×0.3= ㉙10.5÷15= ㉚8.4c−2.1c=二、列竖式计算①0.75×1.4= ②432÷1.6= ③1.25×0.88=

④0.92×2.5= ⑤576÷1.8= ⑥2.05×0.6=

⑦1.36×0.7= ⑧625÷2.5= ⑨3.14×0.5=

⑩0.85×1.6= ⑪728÷3.5= ⑫4.25×0.4=

⑬1.08×1.5= ⑭840÷2.4= ⑮5.06×0.3=

⑯0.68×2.3= ⑰936÷3.6= ⑱6.12×0.2=

⑲1.15×1.2= ⑳1024÷3.2= ㉑7.05×0.8=三、能简便的就简便运算①88×0.25×4 ②5.2×0.28+5.2×0.72

③7.2÷1.25÷0.8 ④99×0.36

⑤6.3×1.01 ⑥4.8÷(4.8×0.2)

⑦101×0.45 ⑧3.8×0.99

⑨9.6÷0.25÷4 ⑩25×(0.4+0.8)

⑪7.5×1.2−2.5×1.2 ⑫12.5÷2.5÷0.4

⑬4.5×99+4.5 ⑭8.6×0.25+1.4×0.25

⑮15.6÷(15.6×0.5) ⑯6.4×12.5

⑰3.6×0.8+3.6×0.2 ⑱21÷1.25

⑲0.25×3.2×1.25 ⑳5.4×1.8+4.6×1.8

㉑36÷(3.6×0.2)四、解方程①3(x−1.2)=12 ②3x+2.5x=5.5 ③2x−0.5=1.5

④4(x+0.8)=3.6 ⑤4.5x−1.5x=1.2 ⑥5x+0.7=3.2

⑦5(x−0.9)=2.5 ⑧6x+3x=4.5 ⑨3x−0.8=1.3

⑩2(x+1.5)=4.0 ⑪7x−2x=3.5 ⑫4x+0.9=2.9

⑬6(x−0.7)=1.8 ⑭8x+2x=6.0 ⑮6x−1.2=3.0

⑯3(x+1.0)=5.1 ⑰9x−4x=4.5 ⑱7x+1.2=4.0

⑲7(x−0.5)=2.1 ⑳10x+5x=7.5 ㉑8x−1.5=2.5参考答案一、直接写出得数①3.2×0.1=0.32

②150×0.04=6

③5.6+4.4=10

④0.4×0.4=0.16

⑤7.7÷11=0.7

⑥5.8a−2.3a=3.5a

⑦0.18÷0.9=0.2

⑧0.48÷0.8=0.6

⑨1.2×0.5=0.6

⑩300×0.02=6

⑪3.7+6.3=10

⑫0.5×0.6=0.3

⑬8.8÷22=0.4

⑭7.2x−4.2x=3x

⑮0.36÷0.6=0.6

⑯0.63÷0.7=0.9

⑰2.5×0.4=1

⑱400×0.05=20

⑲2.9+7.1=10

⑳0.7×0.8=0.56

㉑9.9÷33=0.3

㉒9.5b−3.5b=6b

㉓0.49÷0.7=0.7

㉔0.81÷0.9=0.9

㉕3.6×0.2=0.72

㉖250×0.03=7.5

㉗4.5+5.5=10

㉘0.9×0.3=0.27

㉙10.5÷15=0.7

㉚8.4c−2.1c=6.3c二、列竖式计算①0.75×1.4=1.05

②432÷1.6=270

③1.25×0.88=1.1

④0.92×2.5=2.3

⑤576÷1.8=320

⑥2.05×0.6=1.23

⑦1.36×0.7=0.952

⑧625÷2.5=250

⑨3.14×0.5=1.57

⑩0.85×1.6=1.36

⑪728÷3.5=208

⑫4.25×0.4=1.7

⑬1.08×1.5=1.62

⑭840÷2.4=350

⑮5.06×0.3=1.518

⑯0.68×2.3=1.564

⑰936÷3.6=260

⑱6.12×0.2=1.224

⑲1.15×1.2=1.38

⑳1024÷3.2=320

㉑7.05×0.8=5.64三、简便运算①88×0.25×4=88×(0.25×4)=88×1=88

②5.2×0.28+5.2×0.72=5.2×(0.28+0.72)=5.2×1=5.2

③7.2÷1.25÷0.8=7.2÷(1.25×0.8)=7.2÷1=7.2

④99×0.36=(100−1)×0.36=36−0.36=35.64

⑤6.3×1.01=6.3×(1+0.01)=6.3+0.063=6.363

⑥4.8÷(4.8×0.2)=4.8÷4.8÷0.2=1÷0.2=5

⑦101×0.45=(100+1)×0.45=45+0.45=45.45

⑧3.8×0.99=3.8×(1−0.01)=3.8−0.038=3.762

⑨9.6÷0.25÷4=9.6÷(0.25×4)=9.6÷1=9.6

⑩25×(0.4+0.8)=25×0.4+25×0.8=10+20=30

⑪7.5×1.2−2.5×1.2=(7.5−2.5)×1.2=5×1.2=6

⑫12.5÷2.5÷0.4=12.5÷(2.5×0.4)=12.5÷1=12.5

⑬4.5×99+4.5=4.5×(99+1)=4.5×100=450

⑭8.6×0.25+1.4×0.25=(8.6+1.4)×0.25=10×0.25=2.5

⑮15.6÷(15.6×0.5)=15.6÷15.6÷0.5=1÷0.5=2

⑯6.4×12.5=0.8×(8×12.5)=0.8×100=80

⑰3.6×0.8+3.6×0.2=3.6×(0.8+0.2)=3.6×1=3.6

⑱21÷1.25=(21×0.8)÷(1.25×0.8)=16.8÷1=16.8

⑲0.25×3.2×1.25=(0.25×4)×(0.8×1.25)=1×1=1

⑳5.4×1.8+4.6×1.8=(5.4+4.6)×1.8=10×1.8=18

㉑36÷(3.6×0.2)=36÷3.6÷0.2=10÷0.2=50四、解方程①

解：3(x−1.2)=12

x−1.2=12÷3

x−1.2=4

x=4+1.2

x=5.2②

解：3x+2.5x=5.5

5.5x=5.5

x=5.5÷5.5

x=1③

解：2x−0.5=1.5

2x=1.5+0.5

2x=2

x=2÷2

x=1④

解：4(x+0.8)=3.6

x+0.8=3.6÷4

x+0.8=0.9

x=0.9−0.8

x=0.1⑤

解：4.5x−1.5x=1.2

3x=1.2

x=1.2÷3

x=0.4⑥

解：5x+0.7=3.2

5x=3.2−0.7

5x=2.5

x=2.5÷5

x=0.5⑦

解：5(x−0.9)=2.5

x−0.9=2.5÷5

x−0.9=0.5

x=0.5+0.9

x=1.4⑧

解：6x+3x=4.5

9x=4.5

x=4.5÷9

x=0.5⑨

解：3x−0.8=1.3

3x=1.3+0.8

3x=2.1

x=2.1÷3

x=0.7⑩

解：2(x+1.5)=4.0

x+1.5=4.0÷2

x+1.5=2

x=2−1.5

x=0.5⑪

解：7x−2x=3.5

5x=3.5

x=3.5÷5

x=0.7⑫

解：4x+0.9=2.9

4x=2.9−0.9

4x=2

x=2÷4

x=0.5⑬

解：6(x−0.7)=1.8

x−0.7=1.8÷6

x−0.7=0.3

x=0.3+0.7

x=1⑭

解：8x+2x=6.0

10x=6.0

x=6.0÷10

x=0.6⑮

解：6x−1.2=3.0

6x=3.0+1.2

6x=4.2

x=4.2÷6

x=0.7⑯

解：3(x+1.0)=5.1

x+1.0=5.1÷3

x+1.0=1.7

x=1.7−1.0

x=0.7⑰

解：9x−4x=4.5

5x=4.5

x