Математичний конкурс "Кращий обчислювач".

Завдання конкурсу

«Кращий обчислювач»

1 клас

9 – 6 + 2= __           4 + 2 – 0 =  __

0 + 8 – 7 = __          5 + 2 -  4 =  __

7 – 5 + 0= __           8 – 6 + 2 = __

4 + 5 - 1=  __           8 – 5 – 3 = __

1 + 2 + 4=  __          6 – 2 + 5 = __

3 + 1 + 4=  __          5 + 1 – 3 = __

3 + 6 – 7 = __          9 – 4 + 5 = __

5 + 3 – 2 – 4 +7=  __            … - 6 = 3

1 + 5 + 3 – 4 + 2= __             … + 4 = 9

4 + 4 – 7 + 6 – 3 =  __           … – 2 = 7

9 – 8 + 2 + 4 – 2 =  __            3 +… = 9

2 клас

_______________    _____

29 + 32 = __            19 + 62 = __

35 + 47 = __                       42 - 35 = __

23 + 29 = __                       24 + 18 = __

35 + 28 = __             16 + 15 = __

48 - 35 =  __              8 + 88 = __

19 + 14 = __                       19 +45 = __

36 + 7 =    __            33 - 8 = __

15 – 7 + 9 = __          64 – (23 + 23)= __

7 + 7 – 13 = __           45 – (95 – 65) = __

9+ 9 – 14 = __            96 – (45 + 45 ) = __

9 + 8 – 4 + 7 – 12 + 5 – 7 + 6 + 8 – 20 = __

15 + 15 – 20 + 24 + 34 – 68 + 99 – 77= __

55 + 45 – 60 + 35 – 50 + 9 – 23 – 9 = __

70 + 30 – 50 + 40 – 70+ 80  = __

60 + 20 – 30 – 10 + 60 – 80 + 30  = __

20 + 50 + 10  - 70 + 90 – 60 + 40  = __

3 клас

6*9 – 42 =                   (67 – 59)*8=

7 *7 + 9 =                    80 – 6 * 9=

42 : 6 * 8=                   25 : 5 – 5 =

9*9 – 50=                    (84– 63 ) :3=

6 *8 + 12=                   80 – 8 * 9=

56 : 7 * 6 =                  66 + 42 : 7=

7 *8 + 14=                   90 – 9 * 9=

42 : 7 * 6=                   56 + 42 : 7 =

8*9 – 30=                    (54– 33) : 3=

3 *8 + 16=                   40 – 6 * 6=

49 : 7 * 6 =                  76 + 42 : 7=

8*8 – 42 =                  (47 – 39)*7=

9 *8 + 9=                     60 – 9 * 6=

48 : 8 * 5=                   45 : 5 – 9=

9 *7 + 9=                     70 – 9 * 6=

5 * 5 – 7 : 6 * 9 + 8 : 5 * 6 – 30 : 4 * 7 =

4 * 4 : 2 * 4–12 : 5 * 6 –6 : 2 * 4–20 : 4 =

6 * 6–18 : 3 * 5–15 : 3 * 9–18 : 3 : 3 * 3=

4 клас

53+84:2=                             450:50*9=

5*13+17=                            96: (64-48)=

52:4*5=                               (36+52):8=

69:23*19=                           68:17*23=

91:13*12=                           58:2-17=

72:24+35=                           32:2*9=

46+3*12=                             96:16+57=

3*34+67=                             39*2+18=

4*16+27:3=                         7*12-81:9=

57:19*24=                           810:9+80=

750-24*4=                          400-48:2=

70*6-20=                            320:4+20=

500+810:9=                        50+50*5=

360:4-90=                           90*6-500=

520-120*2=                        (640-160):4=

290-810:9=                         640-160:4=

45 : 5 * 6 – 30 : 6 * 5 – 8 : 6 * 9 + 18 : 6=

18 + 18 : 4 * 5 – 25 : 5 * 6 – 12 : 2* 8 =