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$3500÷20= $
$1600÷16= $
$1200÷60= $
$40×180= $
$108×90= $
$106×50= $
$125×8÷10= $
$25×4÷100= $
$12×800= $
$906×7= $
$705÷5= $
$70×900= $
$302×7= $
$45×70= $
$340×8= $
$250÷( )= 50$
$120×( )= 360$
$240÷( )= 24$
$350÷( )= 7$
$( )÷10= 750$
$( )÷20= 250$
$1600÷16= $
$1200÷60= $
$40×180= $
$108×90= $
$106×50= $
$125×8÷10= $
$25×4÷100= $
$12×800= $
$906×7= $
$705÷5= $
$70×900= $
$302×7= $
$45×70= $
$340×8= $
$250÷( )= 50$
$120×( )= 360$
$240÷( )= 24$
$350÷( )= 7$
$( )÷10= 750$
$( )÷20= 250$
答案
解析：这些题目主要考查了基础的算术运算能力，包括除法、乘法以及它们之间的混合运算。
答案：
$3500 ÷ 20 = 175$
$1600 ÷ 16 = 100$
$1200 ÷ 60 = 20$
$40 × 180 = 7200$
$108 × 90 = 9720$
$106 × 50 = 5300$
$125 × 8 ÷ 10 = 100$
$25 × 4 ÷ 100 = 1$
$12 × 800 = 9600$
$906 × 7 = 6342$
$705 ÷ 5 = 141$
$70 × 900 = 63000$
$302 × 7 = 2114$
$45 × 70 = 3150$
$340 × 8 = 2720$
$250 ÷ (5) = 50$
$120 × (3) = 360$
$240 ÷ (10) = 24$
$350 ÷ (50) = 7$
$(7500) ÷ 10 = 750$
$(5000) ÷ 20 = 250$
答案：
$3500 ÷ 20 = 175$
$1600 ÷ 16 = 100$
$1200 ÷ 60 = 20$
$40 × 180 = 7200$
$108 × 90 = 9720$
$106 × 50 = 5300$
$125 × 8 ÷ 10 = 100$
$25 × 4 ÷ 100 = 1$
$12 × 800 = 9600$
$906 × 7 = 6342$
$705 ÷ 5 = 141$
$70 × 900 = 63000$
$302 × 7 = 2114$
$45 × 70 = 3150$
$340 × 8 = 2720$
$250 ÷ (5) = 50$
$120 × (3) = 360$
$240 ÷ (10) = 24$
$350 ÷ (50) = 7$
$(7500) ÷ 10 = 750$
$(5000) ÷ 20 = 250$
$3600÷ 90+9=$
$450÷ 90-5=$
$1500÷ 50+12=$
$3600÷ 90+100=$
$630÷ 30-14=$
$350÷ 70+70=$
$8100÷ 90+81=$
$300÷ 30+300=$
$3150÷ 30=$
$505÷ 5+26=$
$1800÷ 90+45=$
$650÷ 5+150=$
$375÷ 5+100=$
$36÷ 9+1200=$
$3600÷ 360=$
$312÷ 2+321=$
$3600÷ 90+10=$
$(315-300)÷ 3=$
$880÷ 80-10=$
$540÷ (270-180)=$
$484÷ (12÷ 3)=$
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
$3600÷ 360=$
10
$312÷ 2+321=$
477
$3600÷ 90+10=$
50
$(315-300)÷ 3=$
5
$880÷ 80-10=$
1
$540÷ (270-180)=$
6
$484÷ (12÷ 3)=$
121
答案
解析：这些题目都是基础的四则运算题目，主要考查学生的基本运算能力。
答案：
$3600÷ 90+9$
$=40+9$
$=49$
$450÷ 90-5$
$=5-5$
$=0$
$1500÷ 50+12$
$=30+12$
$=42$
$3600÷ 90+100$
$=40+100$
$=140$
$630÷ 30-14$
$=21-14$
$=7$
$350÷ 70+70$
$=5+70$
$=75$
$8100÷ 90+81$
$=90+81$
$=171$
$300÷ 30+300$
$=10+300$
$=310$
$3150÷ 30=105$
$505÷ 5+26$
$=101+26$
$=127$
$1800÷ 90+45$
$=20+45$
$=65$
$650÷ 5+150$
$=130+150$
$=280$
$375÷ 5+100$
$=75+100$
$=175$
$36÷ 9+1200$
$=4+1200$
$=1204$
$3600÷ 360=10$
$312÷ 2+321$
$=156+321$
$=477$
$3600÷ 90+10$
$=40+10$
$=50$
$(315-300)÷ 3$
$=15÷ 3$
$=5$
$880÷ 80-10$
$=11-10$
$=1$
$540÷ (270-180)$
$=540÷ 90$
$=6$
$484÷ (12÷ 3)$
$=484÷ 4$
$=121$
答案：
$3600÷ 90+9$
$=40+9$
$=49$
$450÷ 90-5$
$=5-5$
$=0$
$1500÷ 50+12$
$=30+12$
$=42$
$3600÷ 90+100$
$=40+100$
$=140$
$630÷ 30-14$
$=21-14$
$=7$
$350÷ 70+70$
$=5+70$
$=75$
$8100÷ 90+81$
$=90+81$
$=171$
$300÷ 30+300$
$=10+300$
$=310$
$3150÷ 30=105$
$505÷ 5+26$
$=101+26$
$=127$
$1800÷ 90+45$
$=20+45$
$=65$
$650÷ 5+150$
$=130+150$
$=280$
$375÷ 5+100$
$=75+100$
$=175$
$36÷ 9+1200$
$=4+1200$
$=1204$
$3600÷ 360=10$
$312÷ 2+321$
$=156+321$
$=477$
$3600÷ 90+10$
$=40+10$
$=50$
$(315-300)÷ 3$
$=15÷ 3$
$=5$
$880÷ 80-10$
$=11-10$
$=1$
$540÷ (270-180)$
$=540÷ 90$
$=6$
$484÷ (12÷ 3)$
$=484÷ 4$
$=121$
$800× (4-3)=
$100÷ 50× 2=
$810÷ 90=
$6× 300+4=
$810÷ 3=
$500+7× 3=
$30+360÷ 60=
$8× 2+80÷ 4=
$202+7× 7=
$(119-8)÷ 3=
$301÷ 7=
$80× (6-3)=
$150÷ 50× 2=
$6× 903+4=
$819÷ 9=
$5+77× 3=
$30+636÷ 6=
$8× 27+8÷ 4=
$729÷ 9=
$128-126÷ 3=
$(128-128)÷ 3=
800
$$100÷ 50× 2=
4
$$810÷ 90=
9
$$6× 300+4=
1804
$$810÷ 3=
270
$$500+7× 3=
521
$$30+360÷ 60=
36
$$8× 2+80÷ 4=
36
$$202+7× 7=
251
$$(119-8)÷ 3=
37
$$301÷ 7=
43
$$80× (6-3)=
240
$$150÷ 50× 2=
6
$$6× 903+4=
5422
$$819÷ 9=
91
$$5+77× 3=
236
$$30+636÷ 6=
136
$$8× 27+8÷ 4=
218
$$729÷ 9=
81
$$128-126÷ 3=
86
$$(128-128)÷ 3=
0
$答案
800×(4-3)=800×1=800
100÷50×2=2×2=4
810÷90=9
6×300+4=1800+4=1804
810÷3=270
500+7×3=500+21=521
30+360÷60=30+6=36
8×2+80÷4=16+20=36
202+7×7=202+49=251
(119-8)÷3=111÷3=37
301÷7=43
80×(6-3)=80×3=240
150÷50×2=3×2=6
6×903+4=5418+4=5422
819÷9=91
5+77×3=5+231=236
30+636÷6=30+106=136
8×27+8÷4=216+2=218
729÷9=81
128-126÷3=128-42=86
(128-128)÷3=0÷3=0
100÷50×2=2×2=4
810÷90=9
6×300+4=1800+4=1804
810÷3=270
500+7×3=500+21=521
30+360÷60=30+6=36
8×2+80÷4=16+20=36
202+7×7=202+49=251
(119-8)÷3=111÷3=37
301÷7=43
80×(6-3)=80×3=240
150÷50×2=3×2=6
6×903+4=5418+4=5422
819÷9=91
5+77×3=5+231=236
30+636÷6=30+106=136
8×27+8÷4=216+2=218
729÷9=81
128-126÷3=128-42=86
(128-128)÷3=0÷3=0
