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1.直接写出得数。
$10.97+3.3=$
$8.08+9.02=$
$6.98+12.3=$
$5.6×100=$
$6.57÷10=$
$0+75.41=$
$14-2.56=$
$8.38-3.8=$
$0×75.41=$
$3.29×0.3=$
$49.31+10.69=$
$9÷4=$
$293-26.5=$
$101-19.1=$
$10.38+7.2=$
$10.97+3.3=$
$8.08+9.02=$
$6.98+12.3=$
$5.6×100=$
$6.57÷10=$
$0+75.41=$
$14-2.56=$
$8.38-3.8=$
$0×75.41=$
$3.29×0.3=$
$49.31+10.69=$
$9÷4=$
$293-26.5=$
$101-19.1=$
$10.38+7.2=$
答案
1. 14.27 17.1 19.28 560 0.657 75.41 11.44 4.58 0 0.987 60 2.25 266.5 81.9 17.58
2. 列竖式计算。
$102.8 - 4.93 =$
$3.28 + 32.8 =$
$1.3 × 9.06 =$
$9.46 + 70.9 =$
$80 - 13.45 =$
$15.4 × 9.8 =$
$102.8 - 4.93 =$
$3.28 + 32.8 =$
$1.3 × 9.06 =$
$9.46 + 70.9 =$
$80 - 13.45 =$
$15.4 × 9.8 =$
答案
2. 97.87 36.08 11.778 80.36 66.55 150.92
3. 用圆片摆图形,按这样的规律摆下去,将表格填写完整。
| 第几个图形 | 1 | 2 | 3 | 4 | … | n |
| --- | --- | --- | --- | --- | --- | --- |
| 白圆片个数 |
|
| 黑圆片个数 |
| 第几个图形 | 1 | 2 | 3 | 4 | … | n |
| --- | --- | --- | --- | --- | --- | --- |
| 白圆片个数 |
4
| 4
| | 4
| … | 4
|| 黑圆片个数 |
0
| 4
| 8
| 12
| … | 4n-4
|答案
3. 从左到右,从上到下:4 4 4 4 4 0 4 8 12 4n−4
