1. 直接写出得数。
12 + 99 =
71 - 42 =
16 ÷ 8 =
12 × 4 × 0 =
85 - 26 =
230 - 90 =
3 × 33 =
88 ÷ 4 × 2 =
56 + 18 =
54 ÷ 9 =
120 - 4 =
200 - 36 ÷ 6 =
23 × 2 =
7 × 7 =
22 - 14 =
11 × 3 + 25 =
21 ÷ 7 =
2 × 24 =
2 × 34 =
19 + 99 × 1 =
9 × 6 =
340 + 560 =
11 × 2 =
14 - 14 ÷ 2 =
24 ÷ 1 =
72 ÷ 8 =
540 - 450 =
513 - (313 - 87) =
640 - 210 =
88 ÷ 8 =
100 - 36 =
72 ÷ (22 - 14) =
12 + 99 =
71 - 42 =
16 ÷ 8 =
12 × 4 × 0 =
85 - 26 =
230 - 90 =
3 × 33 =
88 ÷ 4 × 2 =
56 + 18 =
54 ÷ 9 =
120 - 4 =
200 - 36 ÷ 6 =
23 × 2 =
7 × 7 =
22 - 14 =
11 × 3 + 25 =
21 ÷ 7 =
2 × 24 =
2 × 34 =
19 + 99 × 1 =
9 × 6 =
340 + 560 =
11 × 2 =
14 - 14 ÷ 2 =
24 ÷ 1 =
72 ÷ 8 =
540 - 450 =
513 - (313 - 87) =
640 - 210 =
88 ÷ 8 =
100 - 36 =
72 ÷ (22 - 14) =
答案
1. 111 29 2 0
59 140 99 44
74 6 116 194
46 49 8 58
3 48 68 118
54 900 22 7
24 9 90 287
430 11 64 9
59 140 99 44
74 6 116 194
46 49 8 58
3 48 68 118
54 900 22 7
24 9 90 287
430 11 64 9
2. 用竖式计算。
78 + 546 =
549 - 278 =
426 + 497 - 553 =
394 + 473 =
1000 - 293 =
911 - 305 + 367 =
78 + 546 =
549 - 278 =
426 + 497 - 553 =
394 + 473 =
1000 - 293 =
911 - 305 + 367 =
答案
2. 624 271 370
867 707 973
(竖式略)
867 707 973
(竖式略)
救援队晚上 10:00 开始进行紧急救援工作,到第二天早晨6:00才结束救援工作,救援队一共工作了(
8
)小时。答案
8
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