Math Is Fun
0.00062 written in standard form is ___________
6 .2 x 10-4
If 3x + 5 = 20, then x=
5
A dress bought for $60 and is sold to make a profit of 20%. What is the selling price?
$72
How many millimeters are in 55 cm?
550 mm
What is the value of the digit 3 in the number 2341 ?
300
The number 349. 95 written to 3 significant figures is
350
Solve for x
(x+3)/2 = (x - 4)/4
-10
An item was bought for $125 was sold for $175. What is the percentage profit?
40 %
Travis left for school at 7:42 am and arrived at 8:37 am. How long did it take Travis to get to school?
55 minutes
If the Universal set U = {1,2,3,4,5,6} and H = {3,4,6} then H’ =
H’ = {1,2,5}
(1/2)2 + 1/8 is
3/8
“c is equal to the squareroot of the sum of the squares of a and b can be written as
C = √(a2 + b,2)
Skilli and Skeng shared a sum of money in the ratio 2:3 respectively. Skeng received $40 more than Skilli. What was the total amount of money shared?
$200
3 800 millimetres expressed in metres is
3.8 metres
- 7 - (-3)2 =
- 16
The following scores were obtained by eight players in a domino competition: 5, 3, 6, 8, 7, 8, 3, 6
What is the median score?
6
2(y+3x) + 5y - 2(x+5)
7y + 4x – 10
After a 10% discount, an item is sold for $360. What was the price before the discount?
$ 400
How many 250 cm3 bottles can be filled from a 2 litre container?
8
Which of the fractions below is the greatest?
3/8 , 1/2, 12/16, 7/8
7/8
Three sets of Christmas lights flash at intervals of 4, 6 and 10 seconds respectively. They are started together. How soon after will they next flash together again?
60 seconds
If x = 2, y = -1 and z = 0
xz -y is equal to
2
A man’s basic wage for a 40-hour week is $160.00. He is paid time and a half for overtime. If he works 10 hours overtime in a certain week, his wage for that week is
$ 220
A speed-boat took 45 minutes to travel a distance of 300 km. What was its average speed in kmh-1 ?
400 kmh-1
What is the value of x in:
3(2x - 4) = 12
x = 4