| 1 | . 160 , ½ . -? | |
| 2 | . | X: 6 = 720 |
| 3 | . . 90 /, 80 /. 510 ? | __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ __________________________________ |
| 4 | . | |
| 5 | . | 905- 246= 154+479= |
3
2100
.., ..
: ..
_________ , _________________________________________
1
) .
| 1 | . | ) , . ) , . |
| 2 | . | ) 602, 1002, 72 ) 72, 602, 1002 ) 1002, 602, 72 |
| 3 | . | ) 60-3×4+50:10= 43 ) 60-3×4+50:10= 53 ) 60-3×4+50:10=63 |
| , . | ) × 8 = 56 ) 5 × = 45 ) : 9 = 6 | |
| 5 | ) , . ) , . | |
| 6 | . , 14 7? | ) 2 ) 20 ) 133 |
| 7 | , . | ) 72: = 9 ) 4 × =4 = 72:9 = 4×4 = 8 = 16 72:8=9 4×4=16 9 = 9 16 = 16 |
| 8 | . 48 8 . , 24 ? | ) 48: (24: 8)=16(.) : 16 . ) (48+24): 6 = 12(.) : 12 . |
| 9 | . | ) - ) ) |
| 10 | 7 2 , 8 ? | ) 9 ) 6 4 ) 64 |
)
| 1 | . 80 . 5 7 . ? | _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ |
| 2 | . . | 3 8 + (6 2 9) = : |
| 3 | . 32 . 8 . ? | _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ |
| 4 | . | 7 5 + 6 * 80 6 - 2 * 58 |
| 5 | . | 68 + (90 78) 25 = 9×7 + (32 14: 7) = |
|
|
|
3
2100
.., ..
: ..
_________ , _________________________________________
2
) .
| 1 | . | ) , . ) , . |
| 2 | . | ) 602, 1002, 72 ) 72, 602, 1002 ) 1002, 602, 72 |
| 3 | . | ) 50-3×2+70:10=101 ) 50-3×2+70:10=37 ) 50-3×2+70:10=51 |
| , . | ) × 4 = 12 ) : 5 = 8 ) 30: = 5 | |
| 5 | ) , . ) , . | |
| 6 | . , 12 3? | ) 40 ) 4 ) 117 |
| 7 | , . | ) 81: = 9 ) 3 × = 6 = 81:9 = 3×6 = 9 = 18 81: 9 = 9 3×6=18 9 = 9 18 = 18 |
| 8 | . 24 6 . , 36 ? | ) (24+36): 6 = 12 (.) : 12 . ) 36: (24: 6) = 9 (.) : 9 . |
| 9 | . | ) - ) ) |
| 10 | 5 4 , 9 ? | ) 45 ) 45 ) 6 |
)
| 1 | . 90 . 4 8 . ? | _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ |
| 2 | . . | 8 2 + (4 3 9 ) = : |
| 3 | . 28 2. 7 . ? | _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ |
| 4 | . | 8 2 + 8 * 90 9 - 2 * 81 |
| 5 | . | 64 + (90 84) 35 = 9×8 + (32 12: 4) = |
|
|
|
2
2100
.., ..
: ..
_________ , _________________________________________
1
