24.(16-5)-16.(24-5)
=24.11-16.19
=264-304
=-40
happy new year
24 x ( 16 -5 ) - 16 x ( 24 - 5 )
= 24 x 11 - 16 x 21
= 264 - 336
= -72.
| 2 × 8 = ... | 16 : 2 = ... |
| 21 : 3 = ... | 4 × 5 = ... |
| 3 × 8 = ... | 24 : 3 = ... |
| 5 × 6 = ... | 5 × 4 = ... |
| 4 × 8 = ... | 40 : 4 = ... |
| 28 : 4 = ... | 20 : 4 = ... |
| 5 × 8 = ... | 40 : 5 = |
Tính:
a) 2 × 9 + 63=…
b) 24 : 4 + 44 =…
c) 5 × 6 − 12 =…
d) 3 × 7 −16=…
Tính nhẩm:
| 2 × 8 = ... | 16 : 2 = ... |
| 21 : 3 = ... | 4 × 5 = ... |
| 3 × 8 = ... | 24 : 3 = ... |
| 5 × 6 = ... | 5 × 4 = ... |
| 4 × 8 = ... | 40 : 4 = ... |
| 28 : 4 = ... | 20 : 4 = ... |
| 5 × 8 = ... | 40 : 5 = ... |
| 3 × 6 = ... | 20 : 5 = ... |
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
28+27+26+25+24+23+22+21+20+19+18+17+16+15+14+13+12+11+10+9+8+7+6+5+4+3+2+1+=....................................................?
1+1+2=16
1+1+3=24
1+1+4=32
1+1+5=?
các bạn kb vs mk nha
16 + 24 - 20 = ?
35+24+15+16
Tìm x
24 − x = 7
59 − x = 16
60 − x = 38
