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$360÷90=
$3600÷90+9=
$450÷90-5=
$1500÷50+12=
$3600÷90+100=
$630÷30-14=
$350÷70+70=
$8100÷90+81=
$300÷30+300=
$3150÷30=
$505÷5+26=
$1800÷90+45=
$650÷5+150=
$375÷5+100=
$36÷9+1200=
$3600÷36=
$3600÷90=
$3600÷90+10=
$1800÷30+80=
$1800÷60+60=
$2400÷30+25=
4
$$3600÷90+9=
49
$$450÷90-5=
0
$$1500÷50+12=
42
$$3600÷90+100=
140
$$630÷30-14=
7
$$350÷70+70=
75
$$8100÷90+81=
171
$$300÷30+300=
310
$$3150÷30=
105
$$505÷5+26=
127
$$1800÷90+45=
65
$$650÷5+150=
280
$$375÷5+100=
175
$$36÷9+1200=
1204
$$3600÷36=
100
$$3600÷90=
40
$$3600÷90+10=
50
$$1800÷30+80=
140
$$1800÷60+60=
90
$$2400÷30+25=
105
$答案
解析：这些题目都是基础的四则运算题目，主要考查学生的除法和加减法的基础运算能力。按照题目顺序，依次进行除法运算后，再进行加减法运算即可。
答案：
$360 ÷ 90 = 4$
$3600 ÷ 90 + 9 = 40 + 9 = 49$
$450 ÷ 90 - 5 = 5 - 5 = 0$
$1500 ÷ 50 + 12 = 30 + 12 = 42$
$3600 ÷ 90 + 100 = 40 + 100 = 140$
$630 ÷ 30 - 14 = 21 - 14 = 7$
$350 ÷ 70 + 70 = 5 + 70 = 75$
$8100 ÷ 90 + 81 = 90 + 81 = 171$
$300 ÷ 30 + 300 = 10 + 300 = 310$
$3150 ÷ 30 = 105$
$505 ÷ 5 + 26 = 101 + 26 = 127$
$1800 ÷ 90 + 45 = 20 + 45 = 65$
$650 ÷ 5 + 150 = 130 + 150 = 280$
$375 ÷ 5 + 100 = 75 + 100 = 175$
$36 ÷ 9 + 1200 = 4 + 1200 = 1204$
$3600 ÷ 36 = 100$
$3600 ÷ 90 = 40$
$3600 ÷ 90 + 10 = 40 + 10 = 50$
$1800 ÷ 30 + 80 = 60 + 80 = 140$
$1800 ÷ 60 + 60 = 30 + 60 = 90$
$2400 ÷ 30 + 25 = 80 + 25 = 105$
答案：
$360 ÷ 90 = 4$
$3600 ÷ 90 + 9 = 40 + 9 = 49$
$450 ÷ 90 - 5 = 5 - 5 = 0$
$1500 ÷ 50 + 12 = 30 + 12 = 42$
$3600 ÷ 90 + 100 = 40 + 100 = 140$
$630 ÷ 30 - 14 = 21 - 14 = 7$
$350 ÷ 70 + 70 = 5 + 70 = 75$
$8100 ÷ 90 + 81 = 90 + 81 = 171$
$300 ÷ 30 + 300 = 10 + 300 = 310$
$3150 ÷ 30 = 105$
$505 ÷ 5 + 26 = 101 + 26 = 127$
$1800 ÷ 90 + 45 = 20 + 45 = 65$
$650 ÷ 5 + 150 = 130 + 150 = 280$
$375 ÷ 5 + 100 = 75 + 100 = 175$
$36 ÷ 9 + 1200 = 4 + 1200 = 1204$
$3600 ÷ 36 = 100$
$3600 ÷ 90 = 40$
$3600 ÷ 90 + 10 = 40 + 10 = 50$
$1800 ÷ 30 + 80 = 60 + 80 = 140$
$1800 ÷ 60 + 60 = 30 + 60 = 90$
$2400 ÷ 30 + 25 = 80 + 25 = 105$
$300×30=$
$242×20=$
$614×20=$
$121×40=$
$311×30=$
$125×20=$
$322×30=$
$312×30=$
$122×40=$
$212×20=$
$300÷30=$
$210÷21=$
$240÷20=$
$124÷4=$
$301×3=$
$162×4=$
$905×4=$
$144÷12=$
$132÷11=$
$169÷13=$
$154÷14=$
9000
$242×20=$
4840
$614×20=$
12280
$121×40=$
4840
$311×30=$
9330
$125×20=$
2500
$322×30=$
9660
$312×30=$
9360
$122×40=$
4880
$212×20=$
4240
$300÷30=$
10
$210÷21=$
10
$240÷20=$
12
$124÷4=$
31
$301×3=$
903
$162×4=$
648
$905×4=$
3620
$144÷12=$
12
$132÷11=$
12
$169÷13=$
13
$154÷14=$
11
答案
解析：本题主要考查了三位数乘两位数以及除数是两位数的除法的计算。
答案：
$300×30 = 9000$；
$242×20 = 4840$；
$614×20 = 12280$；
$121×40 = 4840$；
$311×30 = 9330$；
$125×20 = 2500$；
$322×30 = 9660$；
$312×30 = 9360$；
$122×40 = 4880$；
$212×20 = 4240$；
$300÷30 = 10$；
$210÷21 = 10$；
$240÷20 = 12$；
$124÷4 = 31$；
$301×3 = 903$；
$162×4 = 648$；
$905×4 = 3620$；
$144÷12 = 12$；
$132÷11 = 12$；
$169÷13 = 13$；
$154÷14 = 11$。
答案：
$300×30 = 9000$；
$242×20 = 4840$；
$614×20 = 12280$；
$121×40 = 4840$；
$311×30 = 9330$；
$125×20 = 2500$；
$322×30 = 9660$；
$312×30 = 9360$；
$122×40 = 4880$；
$212×20 = 4240$；
$300÷30 = 10$；
$210÷21 = 10$；
$240÷20 = 12$；
$124÷4 = 31$；
$301×3 = 903$；
$162×4 = 648$；
$905×4 = 3620$；
$144÷12 = 12$；
$132÷11 = 12$；
$169÷13 = 13$；
$154÷14 = 11$。
$305×20=$
$402÷6=$
$120÷60=$
$400×18=$
$108×9=$
$106×5=$
$1200÷25÷4=$
$250×40=$
$205×50=$
$25×40=$
$208÷8=$
$950×7=$
$75÷25=$
$709×9=$
$91÷13=$
$51÷17=$
$87÷29=$
$25×($
$12×($
$15×($
$125×($
6100
$402÷6=$
67
$120÷60=$
2
$400×18=$
7200
$108×9=$
972
$106×5=$
530
$1200÷25÷4=$
12
$250×40=$
10000
$205×50=$
10250
$25×40=$
1000
$208÷8=$
26
$950×7=$
6650
$75÷25=$
3
$709×9=$
6381
$91÷13=$
7
$51÷17=$
3
$87÷29=$
3
$25×($
20
$)= 500$$12×($
30
$)= 360$$15×($
40
$)= 600$$125×($
2
$)= 250$答案
解析：
这些题目都是基础的数学运算，包括乘法和除法。
大部分题目可以直接计算，部分题目需要利用除法来求解括号内的数字。
答案：
$305 × 20 = 6100$
$402 ÷ 6 = 67$
$120 ÷ 60 = 2$
$400 × 18 = 7200$
$108 × 9 = 972$
$106 × 5 = 530$
$1200 ÷ 25 ÷ 4 = 12$
$250 × 40 = 10000$
$205 × 50 = 10250$
$25 × 40 = 1000$
$208 ÷ 8 = 26$
$950 × 7 = 6650$
$75 ÷ 25 = 3$
$709 × 9 = 6381$
$91 ÷ 13 = 7$
$51 ÷ 17 = 3$
$87 ÷ 29 = 3$
$25 × (20) = 500$
$12 × (30) = 360$
$15 × (40) = 600$
$125 × (2) = 250$
这些题目都是基础的数学运算，包括乘法和除法。
大部分题目可以直接计算，部分题目需要利用除法来求解括号内的数字。
答案：
$305 × 20 = 6100$
$402 ÷ 6 = 67$
$120 ÷ 60 = 2$
$400 × 18 = 7200$
$108 × 9 = 972$
$106 × 5 = 530$
$1200 ÷ 25 ÷ 4 = 12$
$250 × 40 = 10000$
$205 × 50 = 10250$
$25 × 40 = 1000$
$208 ÷ 8 = 26$
$950 × 7 = 6650$
$75 ÷ 25 = 3$
$709 × 9 = 6381$
$91 ÷ 13 = 7$
$51 ÷ 17 = 3$
$87 ÷ 29 = 3$
$25 × (20) = 500$
$12 × (30) = 360$
$15 × (40) = 600$
$125 × (2) = 250$
