跟着消防员爸爸学习C++编程与算法（请备注算法学习）
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一、写出得数
| 15 ÷ 3 = | 2000 + 300 = | 90 - 61 = | 68 + 22 = | 50 ÷ 6 = |
| 3100 - 500 = | 3 × 3 = | 2300 - 800 = | 72 ÷ 8 = | 12 ÷ 4 = |
| 6 × 7 = | 200 + 3000 = | 91 - 74 = | 1400 - 1000 = | 1400 - 400 = |
| 200 + 300 = | 8000 - 400 = | 3800 - 3000 = | 600 + 800 = | 24 ÷ 4 = |
| 400 + 600 = | 200 + 300 = | 42 + 38 = | 7800 - 300 = | 9100 - 400 = |
| 4 × 7 = | 5200 - 600 = | 2000 + 300 = | 14 ÷ 8 = | 36 ÷ 9 = |
| 91 - 63 = | 200 + 3000 = | 100 + 100 = | 4 × 9 = | 4400 - 200 = |
| 9100 - 700 = | 2300 - 100 = | 42 ÷ 7 = | 6 × 3 = | 14 ÷ 6 = |
| 7 × 7 = | 6 × 6 = | 300 + 300 = | 3800 - 800 = | 4 × 3 = |
| 7700 - 600 = | 90 - 64 = | 400 + 700 = | 6 ÷ 3 = | 900 + 500 = |
| 900 + 700 = | 48 ÷ 8 = | 200 + 700 = | 36 ÷ 5 = | 2 × 8 + 22 = |
| 65 - 6 × 4 = | 32 + 9 ÷ 3 = | 32 - 14 + 45 = | 43 - 19 + 39 = | 15 + 42 ÷ 6 = |
二、填括号
| 42 ÷ ( ) = 6 | ( ) + 900 = 1300 | 55 - ( ) = 14 | 9500 - ( ) = 9300 |
| 18 ÷ ( ) = 3 | ( ) + 900 = 1800 | ( ) - 300 = 9400 | ( ) ÷ 4 = 6 |
| 36 + ( ) = 68 | 2 × ( ) = 16 |
三、竖式计算题，带“※” 要验算
| 412 - 142 - 245 = | 831 - 675 = | ※ 535 + 416 = | ※ 955 - 461 = |
| 299 + 659 = | 422 - 148 + 571 = | 35 ÷ 9 = | 66 ÷ 8 = |
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