Mental Sums

What is 8 × 8?

• 36

• 64

• 72

• 96

How many twenty-cent coins can I exchange for $3?

• 5

• 10

• 15

• 20

Express 100 minutes in hours and minutes.

• 1h 00min

• 1h 20min

• 1h 30min

• 1h 40min

What time is 15 minutes to 4 p.m.?

• 4.15 p.m.

• 3.45 p.m.

• 4.15 a.m.

• 3.45 a.m.

Which of the fractions is the smallest?

• $\frac{3}{10}$
  

• $\frac{3}{13}$

• $\frac{3}{4}$

• $\frac{3}{7}$

Express  $\frac{12}{16}$   in its simplest form.

•  $\frac{3}{4}$  

•  $\frac{6}{8}$  

•  $\frac{4}{6}$  

•  $\frac{2}{3}$  

How many hours and minutes are there in 124 min?

• 1h 24min

• 2h 4min

• 2h 24min

• 1h 4min

Find the product of 300 and 10,

• 3000

• 300

• 30

• 3