3+49= 5+49= 49+4= 7+48= 63+8= 13×7= 15×6= 25×4= 24×5= 15×3=
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/08/17 21:24:57
3+49= | 5+49= | 49+4= | 7+48= |
63+8= | 13×7= | 15×6= | 25×4= |
24×5= | 15×3= | 71-60= | 33-5= |
53-40= | 51-1= | 54-4= | 18+2= |
27+3= | 7+27= | 54+6= | 9+8= |
360÷9= | 720÷8= | 3600÷9= | 2100÷3= |
5400÷6= | 65-56= | 41-32= | 90-81= |
43-36= | 53-48= | 7+8×8= | 6×6+5= |
6+7×7= | 1+3×6= | 5+3×8= | 5+27= |
45+7= | 18+8= | 9+9= | 6+49= |
6+3×9= | 1+2×9= | 5×9+5= | 7×8+6= |
7×9+1= | 6×8+5= | 8+9×6= | 6+5×7= |
5+2×9= | 9×4+6= |
![3+49= 5+49= 49+4= 7+48= 63+8= 13×7= 15×6= 25×4= 24×5= 15×3=](/uploads/image/z/4951763-35-3.jpg?t=3%2B49%3D+5%2B49%3D+49%2B4%3D+7%2B48%3D+63%2B8%3D+13%C3%977%3D+15%C3%976%3D+25%C3%974%3D+24%C3%975%3D+15%C3%973%3D)
3+49=52; 5+49=54; 49+4=53; 7+48=55;
63+8=71; 13×7=91; 15×6=90; 25×4=100;
24×5=120; 15×3=45; 71-60=11; 33-5=28;
53-40=13; 51-1=50; 54-4=50; 18+2=20;
27+3=30; 7+27=30; 54+6=60; 9+8=17;
360÷9=40; 720÷8=90; 3600÷9=400; 2100÷3=700;
5400÷6=900; 65-56=9; 41-32=9; 90-81=9;
43-36=7; 53-48=5; 7+8×8=71; 6×6+5=41;
6+7×7=55; 1+3×6=19; 5+3×8=29; 5+27=32;
45+7=52; 18+8=26; 9+9=18; 6+49=55;
6+3×9=33; 1+2×9=19; 5×9+5=50; 7×8+6=62;
7×9+1=64; 6×8+5=53; 8+9×6=62; 6+5×7=41;
5+2×9=23; 9×4+6=40.
63+8=71; 13×7=91; 15×6=90; 25×4=100;
24×5=120; 15×3=45; 71-60=11; 33-5=28;
53-40=13; 51-1=50; 54-4=50; 18+2=20;
27+3=30; 7+27=30; 54+6=60; 9+8=17;
360÷9=40; 720÷8=90; 3600÷9=400; 2100÷3=700;
5400÷6=900; 65-56=9; 41-32=9; 90-81=9;
43-36=7; 53-48=5; 7+8×8=71; 6×6+5=41;
6+7×7=55; 1+3×6=19; 5+3×8=29; 5+27=32;
45+7=52; 18+8=26; 9+9=18; 6+49=55;
6+3×9=33; 1+2×9=19; 5×9+5=50; 7×8+6=62;
7×9+1=64; 6×8+5=53; 8+9×6=62; 6+5×7=41;
5+2×9=23; 9×4+6=40.
3+49= 5+49= 49+4= 7+48= 63+8= 13×7= 15×6= 25×4= 24×5= 15×3=
8×8=64 7×9=63 7×7=49 6×8=48 5×5=25 4×6=24 能发现什么规律?
9=81,8=64,7=49,6=36,5=25,4=?,3=?,2=?1=?
5+8+11+14+…+29+30=?1-2+3-4+5-6+7-…-48+49=?
约分6/4=49/7=24/8=27/18=36/27=65/13=
观察下列式子2*4+1=9=3²,6*8+1=49=7²,14*16+1=225=15²,
2×4+1=9=3的平方;6×8+1=49=7的平方;14×16+1=225=15的平方...
填空:1∏= 2∏= 3∏= 4∏= 5∏= 6∏= 7∏= 8∏= 9∏= 15∏= 25∏= 36∏= 49∏= 6
找规律:16—1=3×5=15 25—4=3×7=21 36—9=3×9=27 49—16=3×11=33 问
假如:3+4=9; 6+7=29; 8+9=49 ;那么5+6等于多少!
(1)7*7=49 6*8=48
6分之几=4分之3等于28分之几?8分之几=5分之2=25分之几?15分之6=几分之20?24分之21=几分之49?