Finding the Missing Term/s in a Sequence of Numbers and Equation

1) 17, 20, 23, (a)  

Answer explanation

plus 3

2) 99, (a)   , 79, 69

Answer explanation

minus 10

3) 32, 26, ___, 14, __

• 20, 8

• 24, 10

• 22, 12

• 18, 4

Answer explanation

minus 6

4) 40, 35, 37, 32, ___, ___

• 35, 10

• 33, 11

• 34, 29

• 27, 29

Answer explanation

minus 5, plus 2

5) 3, 4, 6, ___, 13, ___, 24

• 6, 15

• 7, 16

• 8, 17

• 9, 18

Answer explanation

+1, +2, +3, +4, +5, +6 ......

Supply the missing term/s in the equation below.

6) 5 + 8 = (a)   + 5

Supply the missing term/s in the equation below.

7) 14 + (a)   = 20 + 14

Supply the missing term/s in the equation below.

2 + 8 + 10 = 8 + 10 + (a)  

Supply the missing term/s in the equation below.

(9 + 6) x 7 = (9 x ___) + (6 x ___)

• 7, 7

• 7, 6

• 9, 7

• 7, 9

Supply the missing term/s in the equation below.

(10 + 11) + (12 + 13) = (12 + ___) + (___ + 11)

• 10, 12

• 11, 13

• 13, 10

• 11, 12