Adding by
10
10
200 + 10 =
What is 210
990 - 10 =
What is 980
400 + 100 =
What is 500
100 - 100 =
What is 0
323 + 10 =
What is 333
442 + 10 =
What is 452
960 - 10 =
What is 950
667 + 100 =
What is 767
200 - 100 =
What is 100
400 - 100 =
What is 300
250 + 10 =
What is 260
540 - 10 =
What is 530
390 + 100 =
What is 490
660 - 100 =
What is 560
555 - 10 =
What is 545
838 + 10 =
What is 848
776 - 10 =
What is 766
110 + 100 =
540 - 100 =
What is 440
800 + 100 =
What is 900
860 + 10 =
What is 870
445 - 10 =
What is 435
333 + 100 =
What is 433
123 - 100 =
What is 23
777 + 10 =
What is 787