# Skip Counting by 9's

The concept on skip counting by 9’s or nines 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 nines up to 11 times.

Skip counting by 9’s up to 11 times –

 9, 1time 18, 2time 27, 3time 36, 4time 45, 5time 54, 6time 63, 7time 72, 8time 81, 9time 90, 10time 99, 11time

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

 (i) 9 × 3 = _____ (iv) 9 × 7 = _____ (vii) 9 × 5 = _____ (x) 9 × 8 = _____ (xiii) 9 × 9 = _____ (ii) 9 × 6 = _____ (v) 9 × 0 = _____ (viii) 9 × 4 = _____ (xi) 9 × 10 = _____ (xiv) 9 × 2 = _____ (iii) 9 × 1 = _____ (vi) 9 × 11 = _____ (ix) 9 × 9 = _____ (xii) 9 × 7 = _____ (xv) 9 × 12 = _____

II. Complete the skip counting series by 9s:

(i) 27, ____, 45, ____, ____, ____, ____, 90.

(ii) 9, 18, ____, ____, ____, ____, 63, ____.

(iii) 36, ____, ____, ____, ____, 81, ____, ____.

(iv) ____, ____, ____, ____, 54, ____, ____, 81.

(v) ____, ____, ____, ____, 72, ____, 90, ____.

(vi) 0, 9, ____, ____, ____, 45, ____, ____.

(vii) 45, ____, ____, ____, ____, 90, 99, ____.

(viii) ____, 18, ____, ____, ____, ____, 63, ____.

(ix) ____, ____, ____, 36, ____, ____, ____, 72.

(x) ____, ____, ____, ____, 90, 99, ____, 117.

 I. (i) 27 (iv) 63 (vii) 45 (x) 72 (xiii) 81 (ii) 54 (v) 0 (viii) 36 (xi) 90 (xiv) 18 (iii) 9 (vi) 99 (ix) 81 (xii) 63 (xv) 108

II. (i) 27, 36, 45, 54, 63, 72, 81, 90.

(ii) 9, 18, 27, 36, 45, 54, 63, 72.

(iii) 36, 45, 54, 63, 72, 81, 90, 99.

(iv) 18, 27, 36, 45, 54, 63, 72, 81.

(v) 36, 45, 54, 63, 72, 81, 90, 99.

(vi) 0, 9, 18, 27, 36, 45, 54, 63.

(vii) 45, 54, 63, 72, 81, 90, 99, 108.