Substitute the choices in the expression to check which number makes the expression true.

Substitute 2 in the expression, 3 × 2 = 6 and 6 < 9.

Substitute 1 in the expression, 3 × 1 = 3 and 3 < 9.

Substitute 4 in the expression, 3 × 4 = 12 and 12 > 9.

Substitute 3 in the expression, 3 × 3 = 9 and 9 = 9.

So, the number 3 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 20 in the expression, 20 ÷ 5 = 4 and 4 < 6.

Substitute 35 in the expression, 35 ÷ 5 = 7 and 7 > 6.

Substitute 30 in the expression, 30 ÷ 5 = 6 and 6 = 6.

So, the number 30 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 2 in the expression, 3 × 2 = 6 < 9.

Substitute 3 in the expression, 3 × 3 = 9 = 9.

Substitute 4 in the expression, 3 × 4 = 12 > 9.

So, the number 3 makes the expression true.

We multiply 8 with 2 to get the left hand side of the expression.

So, the expression would be 16 = 27 - ___.

Substitute the choices in the above expression to check which number would make the expression true.

Substitute 8 in the expression, 27 - 8 = 19 and 19 > 16.

Substitute 9 in the expression, 27 - 9 = 18 and 18 > 16.

Substitute 13 in the expression, 27 - 13 = 14 and 14 < 16.

Substitute 11 in the expression, 27 - 11 = 16 and 16 = 16.

So, the number 11 makes the equation true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 13 in the expression, 13 × 6 = 78 and 78 > 72.

Substitute 11 in the expression, 11 × 6 = 66 and 66 < 72.

Substitute 14 in the expression, 14 × 6 = 84 and 84 < 72.

Substitute 12 in the expression, 12 × 6 = 72 and 72 = 72.

So, the number 12 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 13 in the expression,13 × 6 = 78 and 78 < 96.

Substitute 12 in the expression,12 × 6 = 72 and 72 < 96.

Substitute 14 in the expression,14 × 6 = 84 and 84 < 96.

Substitute 16 in the expression,16 × 6 = 96 and 96 = 96.

So, the number 16 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 6 in the expression, 18× 6 = 108 and 108 > 90.

Substitute 7 in the expression, 18 × 7 = 126 and 126 > 90.

Substitute 8 in the expression, 18 ×8 = 144 and 144 > 90.

Substitute 5 in the expression, 18 × 5 = 90 and 90 = 90.

So, the number 5 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 1 in the expression, 36 ÷ 1 = 36 and 36 > 18.

Substitute 3 in the expression, 36 ÷ 3 = 12 and 12 < 18.

Substitute 4 in the expression, 36 ÷ 4 = 9 and 9 < 18.

Substitute 2 in the expression, 36 ÷ 2 = 18 and 18 = 18.

So, the number 2 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 4 in the expression, 4 ÷ 2 = 2 and 2 < 5.

Substitute 20 in the expression, 20 ÷ 2 = 10 and 10 > 5.

Substitute 22 in the expression, 22 ÷ 2 = 11 and 11 > 5.

Substitute 10 in the expression, 10 ÷ 2 = 5 and 5 = 5.

So, the number 10 makes the expression true.

Recall nine times-table.
1 × 9 = 9
2 × 9 = 18
3 × 9 = 27
4 × 9 = 36
5 × 9 = 45
6 × 9 = 54
7 × 9 = 63
8 × 9 = 72
9 × 9 = 81

So, 9 × 9 = 81

Therefore, the missing number is 9.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 2 in the expression, 4 ÷ 2 = 2 and 2 < 4.

Substitute 4 in the expression, 4 ÷ 4= 1 and 1 < 4.

Substitute 1 in the expression, 4 ÷ 1= 4 and 4 = 4.

So, the number 1 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 3 in the expression, 3 × 2 = 6 and 6 < 8.

Substitute 2 in the expression, 2 × 2 = 4 and 4 < 8.

Substitute 8 in the expression, 8 × 2 = 16 and 16 > 8.

Substitute 4 in the expression, 4 × 2 = 8 and 8 = 8.

So, the number 4 makes the expression true.

Substitute the choices in the expression to check which number makes the expression true.

Substitute 1 in the expression, 13 × 1 = 13 and 13 < 26.

Substitute 3 in the expression, 13 × 3 = 39 and 39 > 26.

Substitute 4 in the expression, 13 × 4 = 52 and 52 > 26.

Substitute 2 in the expression, 13 × 2 = 26 and 26 = 26.

So, the number 2 makes the expression true.