counting by 3
groups of 3
missing number
mistakes
3-99
100

3 6 9 12 __

15

100

there is 51 groups of 3 what is 51 divided by 3

17

100

3 6 9 12 __ 18 21

15 is the missing number

100

hello 3 6 8 9 wait

8 is not suppose to be here!

100

3 6 9 12 __ 18 21 24 27 __ 33 36 39 42 45 48 51 __ 57 60 63 66 __ 72 75 78 81 84 __ 90 93 96 99

15 30 54 69 and 87 are missing

200

51 54 57 60 63 __

66

200

there are 48 people they go in groups of _ and what is 48 divided by 3

3 and 16

200

what is the missing number?

hint: 88 - 1 =

87

200

7 9 12 15

7 is no

200

three or 3

digital 3

300

12 15 18 21 24 27 __

30

300

99 divided by 3

33

300

3 6 9 __

12 is it

300

14 15 18 21 24 26 27

14 and 26 GET OUT

300

3 6 9 69 36 39

3 6 9 SAME NUMBERS

400

66 69 72 75 78 __

81

400

45 is divided by 3 but 3 x _ = 45

15 x 2 = 30

400

42 45 __

48

400

15 18 21 24 27 30 30 33

there is 2 30!

400
1 2 3

4 5 6

7 8 9

3

6

9

500

15 18 21 24 27 30 33 36 __

39

500

66 divided by _ = 3

22 is the right answer

500

back in my day 54 was a 20 + 7 = ?? place

27

500

99 100

skip count by 1 i mean 3

500

999 99 9

3 9 2 9 1 9