MENTAL ARITHMETIC

What is 1 hour plus 45 minutes, plus 30 minutes?

• 2 h 10 min

• 2 h 15 min

• 2 h 5 min

• 2h 20 min

What is 0.5 times 60?

• 30

• 25

• 29

• 35

Part three of 39?

• 10

• 9

• 5

• 13

How much is 3 cubed?

• 76

• 9

• 27

• 57

42 divided by 6 times 5?

• 25

• 45

• 35

• 30

5 cubed minus 5?

• 110

• 59

• 130

• 120

Two of the interior angles of a triangle measure 40° and 60° respectively, how long is the third angle?

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60 between which number gives 20?

How much is 10% of 90?

• 9

• 70

• 50

• 80

How is 9 squared?

• 18

• 81

• 27

• 72