1. 直接写出得数。
9700 - 9000 = 1000 + 7000 = 1000 + 900 = 500 + 40 =
3000 + 4000 = 5000 + 700 = 1600 - 1000 = 1100 - 1000 =
7000 - 5000 = 9000 - 7000 = 9000 - 1000 = 8000 - 5000 =
300 + 20 = 50 + 800 = 5000 + 300 = 700 + 4000 =
650 - 50 = 8000 - 6000 = 6800 - 800 = 300 + 60 =
2000 + 3000 = 600 + 3000 = 7000 + 800 = 6400 - 400 =
460 - 400 = 9000 + 100 = 5300 - 5000 = 3200 - 200 =
9000 + 400 = 600 - 200 = 4000 + 600 = 190 - 100 =
9700 - 9000 = 1000 + 7000 = 1000 + 900 = 500 + 40 =
3000 + 4000 = 5000 + 700 = 1600 - 1000 = 1100 - 1000 =
7000 - 5000 = 9000 - 7000 = 9000 - 1000 = 8000 - 5000 =
300 + 20 = 50 + 800 = 5000 + 300 = 700 + 4000 =
650 - 50 = 8000 - 6000 = 6800 - 800 = 300 + 60 =
2000 + 3000 = 600 + 3000 = 7000 + 800 = 6400 - 400 =
460 - 400 = 9000 + 100 = 5300 - 5000 = 3200 - 200 =
9000 + 400 = 600 - 200 = 4000 + 600 = 190 - 100 =
答案
1. 700 8000 1900 540
7000 5700 600 100
2000 2000 8000 3000
320 850 5300 4700
600 2000 6000 360
5000 3600 7800 6000
60 9100 300 3000
9400 400 4600 90
7000 5700 600 100
2000 2000 8000 3000
320 850 5300 4700
600 2000 6000 360
5000 3600 7800 6000
60 9100 300 3000
9400 400 4600 90
2. □里最大能填几?
708>□63 7537>75□6 4236>4□37
63□1<6350 870□<8705 6□6<620
708>□63 7537>75□6 4236>4□37
63□1<6350 870□<8705 6□6<620
答案
2. 6 3 1
4 4 1
4 4 1
3. 连一连。
3050 3500 5030 5003 5300
5个千 3个千 5个千 5个千 3个千
和3个一 和5个十 和3个百 和3个十 和5个百
3050 3500 5030 5003 5300
5个千 3个千 5个千 5个千 3个千
和3个一 和5个十 和3个百 和3个十 和5个百
答案
3.
一个四位数接近4000,千位上的数字与个位上的数字相同,百位上的数字比十位上的数字多9。这个四位数是(
3903
)。答案
思维提升
3903
3903
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