2026年口算训练四年级数学下册北师大版双色升级版第79页答案
扬帆起航
$1 - 0.09 =$
0.91
$0.1 - 0.01 =$
0.09
$1 - 0.86 =$
0.14

$4 - 2.02 =$
1.98
$0.36 + 0.4 =$
0.76
$3.11 + 2.22 =$
5.33

$12.5 + 12.5 =$
25
$6.5 - 0.65 =$
5.85
$9.8 - 4 =$
5.8

$8.33 - 6.83 =$
1.5
$3.56 - 1.74 =$
1.82
$8.16 + 2.04 =$
10.2

答案

1. 0.91
2. 0.09
3. 0.14
4. 1.98
5. 0.76
6. 5.33
7. 25
8. 5.85
9. 5.8
10. 1.5
11. 1.82
12. 10.2
乘风破浪
$0.6 × 10 =$
6
$0.6 × 100 =$
60
$0.6 ÷ 10 =$
0.06

$0.6 ÷ 100 =$
0.006
$6 × 100 =$
600
$6 × 0.01 =$
0.06

$6 × 0.1 =$
0.6
$6 × 0.001 =$
0.006
$0.06 × 10 =$
0.6

$0.06 × 100 =$
6
$0.06 × 1000 =$
60
$0.06 ÷ 10 =$
0.006

$0.06 ÷ 100 =$
0.0006
$60 × 10 =$
600
$60 ÷ 10 =$
6

$60 ÷ 100 =$
0.6
$60 ÷ 1000 =$
0.06
$0.006 × 10 =$
0.06

$0.006 × 100 =$
0.6
$0.06 × 10000 =$
600
$0.006 ÷ 10 =$
0.0006

$600 × 10 =$
6000
$0.8 × 0.1 =$
0.08
$0.8 × 100 =$
80

$600 ÷ 10 =$
60
$0.8 × 10 =$
8
$0.8 ÷ 100 =$
0.008

$600 ÷ 1000 =$
0.6
$0.8 ÷ 10 =$
0.08
$0.8 × 1000 =$
800

答案

6；60；0.06；0.006；600；0.06；0.6；0.006；0.6；6；60；0.006；0.0006；600；6；0.6；0.06；0.06；0.6；600；0.0006；6000；0.08；80；60；8；0.008；0.6；0.08；800
圆满返航
10张纸叠放在一起的厚度是0.99毫米，1000张这样的纸叠放在一起厚(
9.9
)厘米。如果要叠成1米高，大约需要(
10101
)张纸。
秘籍点拨 1000张纸里有几个10张？
★评价：需要努力(
) 基本过关(
) 非常出色(
) 79
第80片

答案

9.9；10101