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1. 直接写出得数。
10.6×10=
0.99×10=
8.6×100=
0.09×(
0.2×100=
3.18×1000=
0.013×10=
16.66×(
3.2×1000=
1.7×10=
0.77×1000=
0.23×(
0.5×10=
9.01×100=
2.4×100=
0.072×(
0.17×100=
0.33×1000=
0.358×10=
3.1×(
0.12×10=
9.56×100=
0.039×100=
1.203×(
4.8×100=
8.008×1000=
0.72×10=
(
0.07×10=
0.005×100=
1.3×100=
0.08×(
10.6×10=
0.99×10=
8.6×100=
0.09×(
100
)=90.2×100=
3.18×1000=
0.013×10=
16.66×(
10
)=166.63.2×1000=
1.7×10=
0.77×1000=
0.23×(
100
)=230.5×10=
9.01×100=
2.4×100=
0.072×(
10
)=0.720.17×100=
0.33×1000=
0.358×10=
3.1×(
1000
)=31000.12×10=
9.56×100=
0.039×100=
1.203×(
100
)=120.34.8×100=
8.008×1000=
0.72×10=
(
0.023
)×100=2.30.07×10=
0.005×100=
1.3×100=
0.08×(
1000
)=80答案
1. 106 9.9 860 100
20 3180 0.13 10
3200 17 770 100
5 901 240 10
17 330 3.58 1000
1.2 956 3.9 100
480 8008 7.2 0.023
0.7 0.5 130 1000
20 3180 0.13 10
3200 17 770 100
5 901 240 10
17 330 3.58 1000
1.2 956 3.9 100
480 8008 7.2 0.023
0.7 0.5 130 1000
2. 用竖式计算。
0.83×29 =
30.5×47 =
2.85×26 =
2.05×320 =
4.71×60 =
3.76×58 =
0.83×29 =
30.5×47 =
2.85×26 =
2.05×320 =
4.71×60 =
3.76×58 =
答案
2. 24.07 1433.5 74.1
656 282.6 218.08
竖式略
656 282.6 218.08
竖式略
想一想，填一填。
$0.059× \underbrace{1000··· 0}_{2025个0}=( )$
$0.72× \underbrace{2000··· 0}_{2025个0}=( )$
$0.036× \underbrace{3000··· 0}_{2026个0}=( )$
$0.86× \underbrace{5000··· 0}_{2026个0}=( )$
$0.059× \underbrace{1000··· 0}_{2025个0}=( )$
$0.72× \underbrace{2000··· 0}_{2025个0}=( )$
$0.036× \underbrace{3000··· 0}_{2026个0}=( )$
$0.86× \underbrace{5000··· 0}_{2026个0}=( )$
答案
$59\underbrace{000···0}_{2022个0}$
$144\underbrace{000···0}_{2023个0}$
$108\underbrace{000···0}_{2023个0}$
$43\underbrace{000···0}_{2025个0}$
