Algebra
Write an expression for the sum of a and 8
a + 8
Simplify the ratio 4:8
1 : 2
evaluate 32
3 x 3
= 9
What is the square root of 144 ?
12
Write 6×6×6×6 using index notation ?
64
If x=4
find x+6
4 + 6
=10
There are 2 red counters and 3 blue counters. What is the ratio of red to blue?
2 : 3
What is 122 ?
144
Which number has a square root of 18?
324
because 18 x 18 or 182 = 324
Calculate 25 + 32
= 32+9
=41
Simplify:
4x+3+2x
6x + 3
A ratio is 3:4
How many total parts are there?
3 + 4
= 7 total parts
What square number comes after 36?
8 2 = 64
Find the square root of 144 plus the square root of 81 ?
12 + 9
= 21
Which is larger:
53 or 35
35 because 53=125 and 35 = 243
A movie ticket costs ttt dollars.
Write an expression for 2 tickets and a $5 snack.
2t + 5
The ratio of boys to girls in a class is 5:7 There are 36 students altogether. How many girls are there?
21 girls
A number squared equals 169. What is the number?
13
because 132=169
A square garden has an area of 256 m2.
What is the length of one side of the garden ?
= square root of 256
= 16 m
Calculate 42 x 23
= 16×8
=128
A number is multiplied by 4, then 3 is added. Write an expression.
4x +3
Jack and Leo share money in the ratio 3:8. Leo gets $45 more than Jack. How much money do they share altogether?
$99 in total
A square has an area of 196 cm². What is the length of one side?
14 cm, because 142=196
A square has an area of 361 cm2
What is the perimeter of the square?
= square root of 361
= 19 cm for one side
= 19 x 4
= 76 cm
Calculate: 24×32+52
=16×9+25
=144+25
=169.