1. Year 11 Mini-Assessment 6
HIGHER
Types of Number

2. 
5.42 x 105 
3.8x x x x10-2 or  
0.38x x x

3.  either fully correct   (a) 2 x 2 x 2 x 2 x 5 = 24 x 5 (b)80 
2 x 2 x 2 x 2 x 5
= 24 x 5
either fully correct 2 40  2 20
(b)
LCM of 50 and 80 = 400
Matt = 8 laps
Dan = 5 laps  2 10 2 5

4.     (a) 3.95 x 10-22 ≈ 4 x 10-22 (1 x 103) ÷ (4 x 10-22)
(b)
UNDERESTIMATE – dividing by a slightly larger
number than the original. 