Skip Counting by 3's

The concept on skip counting by 3’s or threes is an essential skill to learn when making the jump from counting to basic addition.

The sequence chart will help us to write the number to complete the series which involves skip counting by threes up to 33 times.

Skip Counting By 3

Skip counting by 3’s up to 33 times –

3,

1

time

6,

2

time

9,

3

time

12,

4

time

15,

5

time

18,

6

time

21,

7

time

24,

8

time

27,

9

time

30,

10

time

33,

11

time

36,

12

time

39,

13

time

42,

14

time

45,

15

time

48,

16

time

51,

17

time

54,

18

time

57,

19

time

60,

20

time

63,

21

time

66,

22

time

69,

23

time

72,

24

time

75,

25

time

78,

26

time

81,

27

time

84,

28

time

87,

29

time

90,

30

time

93,

31

time

96,

32

time

99,

33

time

I. Now look at the chart above where every third number is in dark yellow color and fill in the blanks below:

(i) 3 × 32 = _____

(iv) 3 × 14 = _____

(vii) 3 × 26 = _____

(x) 3 × 29 = _____

(xiii) 3 × 15 = _____

(ii) 3 × 33 = _____

(v) 3 × 19 = _____

(viii) 3 × 22 = _____

(xi) 3 × 30 = _____

(xiv) 3 × 11 = _____

(iii) 3 × 23 = _____

(vi) 3 × 17 = _____

(ix) 3 × 28 = _____

(xii) 3 × 20 = _____

(xv) 3 × 25 = _____

II. Complete the skip counting series by 3s:

(i) 0, 3, 6, ____, ____, ____, ____, ____.

(ii) 21, 24, ____, ____, ____, ____, 39, ____.

(iii) 18, ____, ____, ____, ____, 33, ____, ____.

(iv) ____, ____, ____, ____, 57, ____, ____, 66. 

(v) ____, ____, ____, ____, 72, 75, ____, 81.

(vi) 78, 81, ____, ____, ____, 93, ____, ____. 

(vii) 66, ____, ____, ____, ____, 81, 84, ____.

(viii) 42, 45, ____, ____, ____, ____, ____, 63.

(ix) ____, ____, 36, 39, ____, ____, ____, 51.

(x) ____, ____, ____, ____, 60, 63, ____, 69.


Answers:


I. (i) 96

(iv) 42

(vii) 78

(x) 87

(xiii) 45

(ii) 99

(v) 57

(viii) 66

(xi) 90

(xiv) 33

(iii) 69

(vi) 51

(ix) 84

(xii) 60

(xv) 75

II. (i) 0, 3, 6, 9, 12, 15, 18, 21.

(ii) 21, 24, 27, 30, 33, 36, 39, 42.

(iii) 18, 21, 24, 27, 30, 33, 36, 39.

(iv) 45, 48, 51, 54, 57, 60, 63, 66. 

(v) 60, 63, 66, 69, 72, 75, 78, 81.

(vi) 78, 81, 84, 87, 90, 93, 96, 99. 

(vii) 66, 69, 72, 75, 78, 81, 84, 87.

(viii) 42, 45, 48, 51, 54, 57, 60, 63.

(ix) 30, 33, 36, 39, 42, 45, 48, 51.

(x) 48, 51, 54, 57, 60, 63, 66, 69.







2nd Grade Math Practice

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