34+38=72 ; 23+37=60 ; 34+19=53
29+40=69 ; 56+12=68 ; 50+19=69
34 + 38 = 72 23 + 37 = 60 34 + 19 = 53
29 + 40 = 69 56 + 12= 68 50 + 19= 69
đúng k
* Ryeo *
34 + 38 = 72 23 + 37 = 60 34 + 19 = 53
29 + 40 = 69 56 + 12 = 68 50 + 19 = 69
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50=?
Điền dấu >, <, = vào chỗ chấm
38 … 83
45 + 23 … 45 – 24
12 + 37 … 37 + 12
56 – 0 … 56 + 0
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37=
Đặt tính rồi tính
35 + 12 60 + 38 6 + 43
41 + 34 22 + 40 54 + 2
34 + 23 = ????
56 - 22 = ????
Tính nhẩm:
| 85 – 5 = … | 74 – 3 = … | 56 – 1 = … |
| 85 – 50 = … | 74 – 30 = … | 56 – 10 = … |
| 85 – 15 = … | 74 – 34 = … | 56 – 56 = … |
34 + 12 = ?
34 + 23 = ?
23 + 12 = ?
23 + 34 = ?
