4
2100
.., ..
: ..
_________ , _________________________________________
1
) .
| 1 | . | ) , . ) , . |
| 2 | - . | ) 17 , 657 , 4 ) 4 , 17 , 657 ) 657 , 17 , 4 |
| 3 | . 6 2 25 | ) 1 35 ) 215 ) 375 |
| 4 | . (90 × 60): = 10 | ) = 54 ) = 540 ) = 5400 |
| 5 | ) . ) . | |
| 6 | . | )  ;  ;  ;  ; 
)  ;  ;  ;  ; 
|
| 7 | , , . | )  10 1=100;
10=1000
1000:4×3=750()
)  1. 1=1000
1000:2×5=2500()
|
| 8 | . 20 , 5. 1/5 , 2/4 . ? | ) 20 ×5 =100 (.) 100:5×1=20 (.) 100:4×2=50 (.) : 50 . . ) 20 ×5 =100 (.) 100:5×1=20 (.) 100-20=80(.) 80:4×2=40 (.) : 40 . . |
| 9 | : 0×(600-200:4 + 85×2) | 1) 270 2) 0 3) 730 |
| 10 | 72 ., 6 . ? | ) 18 ) 36 ) 12 |
)
| 1 | . 120 , ½ . ? | ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ ____________________________________ |
| 2 | . | X: 3 = 810 |
| 3 | . 360 . . 60 /, 70 /. ? | ____________________________________ ____________________________________ ___________________________________ ____________________________________ ____________________________________ ____________________________________ |
| 4 | . | |
| 5 | . | 928-179= 567+ 389= |
|
|
|
4
2100
.., ..
: ..
_________ , _________________________________________
2
) .
| 1 | . | ) , . ) , . |
| 2 | - . | ) 14 , 872 , 3 ) 3 , 14 , 872 ) 872 , 14 , 3 |
| 3 | . 8 2 15 | ) 3 45 ) 345 ) 5 40 |
| 4 | . (70 × 60): = 10 | ) = 42 ) = 420 ) = 4200 |
| 5 | ) . ) . | |
| 6 | . | ) ; ; ; ;
) ; ; ; ;
|
| 7 | , , ? | ) 20 1=100
20=2000
2000:4×3=1500()
)  1 1 =1000
1000:2×5=2500()
|
| 8 | . 40 , 5. 2/5 , 1/5 . ? | ) 40×5=200 (.) 200:5×2=80 (.) 200-80=120 (.) 120:5×1=24 (.) : 24 . . ) 40×5=200 (.) 200:5×2=80 (.) 200:5×1=40 (.) : 40 . . |
| 9 | : (400-200:2 + 83×2)×0 | 1) 466 2) 266 3) 0 |
| 10 | 60 ., 5. ? | ) 65 ) 34 ) 17 |
