Question

15道异分母分数加减法题，带答案

简单的口算题

Answer 1

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

Answer 2

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

Answer 3

异分母分数相加减，先通分，然后按照同分母分数加减法的法则进行计算。
谢谢采纳！

Answer 4

1+1=2
2+2=3
3+3=4
4+4=5
5+5=6
6+6=7
7+7=8
8+8=9
9+9=10
10+10=11
11+11=12
12+12=13
13+13=14
15+15=16

Answer 5

2/3+6/7=32/21
4/5-1/2=3/10
5/9-1/3-2/9