第1个回答 2010-07-20
17×40=680, 100-63=37, 123+25=148 123-35=88 56×7=392 135÷5=27
248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38...
456+45=501 ...546-457=89 ... 45×10=451 ... 564-12=47...
879+54=933 ...896-546=350 ...56×12=672.... 45-5=9...
457+456=913...
7+14=21 ... 18-9=9...
8+16=24 ... 25-5=20...
9+18=27... 56-45=11...
10+20=30... 45-23=22...
11+22=33... 78-23=55...
12+24=36...
10-3=7
15-4=11
20-5=15
25-6=19
30-7=23
35-8=27
40-9=31
45-10=35
50-11=39
55-12=43
60-13=47
65-14=51
70-15=55
75-16=59
80-17=63
85-18=67
90-19=71
95-20=75
100-21=79
105-22=83
110-23=87
115-24=91
120-25=95
125-26=99
130-27=103
13+26=39...
14+28=42...
15+30=45...
16+32=48...
17+34=51...
18+36=54...
19+38=57...
20+40=60...
21+42=63...
22+44=66...
23+46=69...
24+48=72...
25+50=75...
26+52=78...
27+54=81...
28+56=84...
29+58=87...
30+60=90...
31+62=93...
32+64=96...
33+66=99...
5 ÷1 =5
10 ÷2 =5
15 ÷3 =5
20 ÷4 =5
25 ÷5 =5
30 ÷6 =5
35 ÷7 =5
40 ÷8 =5
45 ÷9 =5
50 ÷10 =5
55 ÷11 =5
60 ÷12 =5
65 ÷13 =5
70 ÷14 =5
75 ÷15 =5
80 ÷16 5
85 ÷17 5
90 ÷18 5
95 ÷19 5
100 ÷20 5
第3个回答 2010-07-16
20÷4= 30÷6= 24÷4= 8÷4= 10÷5= 42÷6=
24÷3= 20÷5= 4÷2= 18÷3= 12÷6= 12÷3=
15÷5= 16÷4= 30÷5= 24÷6= 25÷5= 20+5=
18÷3= 8×6= 39-24= 32÷8= 19-7= 12+6=
12÷6= 30÷6= 15÷3= 25÷5= 20÷5= 24÷4=
20÷4= 15+6= 36÷6= 8+12= 15÷5= 27-8=
8÷4= 10÷2= 5×7= 25+19= 9÷3= 30÷5=
20÷4= 16÷4= 25+5= 3×6= 18÷3= 30+6=
25÷5= 3×4= 20÷5= 24÷4= 18-6= 6×2=本回答被网友采纳