Question

Complete the table and by inspection of the table, find the solution to the equation 5t = 35. 

t	3	4	5	6	7	8	9	10	11	______
5t	______	______	______	______	______	______	______	______	______	______

Answer 1

For 5t, the table can be constructed as follows.  

t	5t
3	5 × 3 = 15
4	5 × 4 = 20
5	5 × 5 = 25
6	5 × 6 = 30
7	5 × 7 = 35
8	5 × 8 = 40
9	5 × 9 = 45
10	5 × 10 = 50
11	5 × 11 = 55

By inspection, we can find that t = 7 is the solution of the above equation as for t = 7, 5t = 5 × 7 = 35