Probability
Index Laws
Consumer Arithmatic
Rational Numbers
Algebraic Fractions
100
Definite.
Finding sand on Bondi Beach: likely or definite?
100
What is 5 x 5?
100
$29.00
An employee is paid $7.25 an hour at a fast food outlet. What is he paid for a 4 hour shift?
100
130cm
Choose the best estimate height for a chimpanzee: 13cm, 130cm, 1300cm.
100
2/e
1/e + 1/e
200
1/2
What is the probability of landing heads on a tossed coin?
200
-5 x -5 x -5
Expand (-5)³
200
$146.25
Maria is paid a piecework rate for sewing buttons onto shirts. The rate is 65c for each shirt. How much does she earn for buttoning 225 shirts in a day?
200
79 900
Round 79 867 off to the nearest hundred.
200
5a/6
a/2 + a/3?
300
1/20.
A light-bulb manufacturer found that in every 100 light bulbs, 5 failed the test and were discarded. What is the experimental probability that the next lightbulb tested will be discarded?
300
60⁵ divided by 12³
300
$249.38
Cathie sells cosmetics and is paid 17% on all sales. a What is her income if she sells $1425 worth of cosmetics in a week?
300
4.25
A number that has 2 decimal places is rounded to 4.3 What is the smallest this number could have been?
300
ab/c divided by b/ac =
400
10/100 = 1/10
The numbers 1-100 are written on identical cards and placed in a bag. What is the theoretical probability of drawing a card ending in 5. 10/100 = 1/10
400
100x⁶
(10x³)²=
400
12.3%
Helga is paid a retainer of $450 per week plus a commission on her fortnightly sales. In one particular fortnight she earned $1901 when her sales were $15 400. Calculate Helga’s rate of commission as a percentage.
400
$103.23
Given that one Australian dollar is valued at 68.82c US, approximately how many US dollars could you obtain for $150 Australian?
400
12a/6 + 10x/6 = 2a + 10x/6
(5a/3 + a/3) + (7x/6 + 3x/6)
500
16/40 = 4/10 = 2/5
Herbert went to a pirate convention. Whilst there, he saw 8 pirates with blue beards, 4 with yellow beards, 16 with black beards and 12 with red beards. What is the experimental probability that a pirate has a black beard?
500
4a³b
16a⁷b³ divided by 4a⁵b³
500
$1478
Anna is paid $23.50 an hour and is recieves commission of 10% of all her sales. If she works 40 hours one week in the holidays on time and a half, and makes 680 in sales, how much would she have earned in that week?
500
Any number greater than 250 000, but less than 255 000
In an average human the normal platelet count in the blood is 250 000 per cubic millimetre, correct to 2 significant figures. What might the exact measure have been?
500
120m²/45 + 84/5
(12m/5 x 10m/9) + (12a/b divided by 5a/7b)