Question

Calculate and verify in the reverse operation:
7x4=28 5x7= 1 949 + 1 527 =
40 : 5 =
985 + 2 985 =
21:3 =
34 + 3 090 =
9 x 3 = 4 321 + 1 999 =
7:7 =
0:9=
500 + 4 500 =
32 : 8 =
9 x 6 =
54:9=
100 -
3 =
1 000 - 95 =
4 900 - 1540
6 100 - 3 294 =
10 000 -6 987 =​

Answer 1

5x7 = 35

1949 + 1527 = 3476

40/5 = 8

985 + 2985 = 3970

21/3 = 7

34 + 3090 = 3124

9x3 = 27

4321 + 1999 = 6320

7/7 = 1

0/9 = 0

500 + 4500 = 5000

32/8 = 4

9x6 = 54

54/9 = 6

100 - 3 = 97

1000 - 95 = 905

4900 - 1540 = 3360

6100 - 3294 = 2806

10000 - 6987 = 3013