Positive and Negative Numbers
3-10 =
-7
Simplify:
3a+4a
7a
If r = 5 and m = 8, then r + m =
13
A shape was divided into equal pieces. Three pieces were shaded and four were not shaded. Write the fraction for the shaded part.
3/7
Mum has a black pen, two blue pens and a red pen in her bag. The chance of her pulling out a black pen at random is...
1/4
20 – (+7) =
13
8a+2a-3a
7a
If n = 4 and p = 2, then np =
8
How many quarters are there in three wholes?
12
P(having maths at a given period during the week)
4/25
What is the next number in this pattern?
−4, −9, −7, −12, −10, −15
-13
3a+2b
3a+2b
For r = 5 and m = 8, work out the value of 2m + r
Write 35% as a simplified fraction
7/10
You have 7 red marbles, 6 blue marbles and 8 green marbles. What is the simplified probability of selecting a blue marble?
2/7
At 10 am the temperature was −4°C. At 2 pm the temperature was 7°C. What was the rise in temperature?
11°C
Simplify:
3xy + 2yx +2x2
5xy +2x2
The rate a plane climbs is modelled by the following equation:
h = 500t+1000
Where h is the fight in feet at time t minutes. What is the plane's altitude 6 minutes after takeoff?
4000 feet
How many minutes is 0.5 hours?
30 minutes
Ben has 200 songs on his iPad. 30 of them are played by his favourite band. If he picks a song at random, what is the chance that it is by his favourite band? Given your answer as a percentage
15%
Megan’s wage for last week was $500, from which tax of $150 and a $15 contribution to a healthfund were deducted. Megan was also given a bonus of $20. How much money does she have now?
$355
3a2-8a2
-5a2
The rate a plane climbs is modelled by the following equation:
h = 500t+1000
Where h is the fight in feet at time t minutes. How long will it take the plane to reach 9500 feet?
17 minutes
Jemima got 17 out of 20 on her maths test. What percentage of her test was incorrect?
15%
The pet shop has a mouse cage containing 30 mice. The probability of selecting a brown mouse is 0.4, and 0.2 for a white mouse. The rest are piebald (mixed brown and white).
What is the probability of randomly selecting a piebald mouse as a fraction?
18/30 (4/15)