Mental Maths
76 + 58
134
5 − 11
-6
5 × 5 × 5 in index form.
5³
Simplify 5⁴ × 5³
5⁷
A worker earns $26 per hour for 38 hours. How much do they earn?
$988
142 − 67
75
−9 − 4
-13
4² × 3² in expanded form.
4 × 4 × 3 × 3
9¹¹ ÷ 9⁴
9⁷
Temperature rises from −14°C to 18°C. By how much did it increase?
32°C increase
8 − 2 × 5
-2
−3 − (−8)
5
6² − 4²
20
(4²)⁵
4¹⁰
A car travels 72 km per hour for 5 hours. Distance?
360 km
15 + (4 × 6) − 3 × 5
24
−10 + 6 − (−2)
-2
(3³) ÷ 3
9
(3⁷ × 3²) ÷ 3⁵
3⁴
A factory packs 48 boxes into each crate.
They have packed 1,152 boxes in total.
1,152 ÷ 48 = 24
They used 24 crates.
360 ÷ 9 + 8 × 4 − 12
60
−7 × (−5) − 8
27
2³ + 4² × 3
56
((8⁶ ÷ 8³) × 8⁴) ÷ 8²
8⁵
A temperature starts at −18°C.
It rises 7°C every hour for 3 hours, then drops 12°C.
What is the final temperature?
−9°C