Number Flashcards
Write 7/10 as a decimal
0.7
Write 1/4 as a decimal
0.25
Write 3/8 as a decimal
0.375
What is 0.8 as a percentage?
80%
find 2/5 of 25
(25 ÷ 5 ) x 2 = 10
find 4/7 of 280
(280÷ 7) x 4 = 160
What are the first 5 square numbers ?
1, 4, 9, 16, 25
What are the first 5 cube numbers
1, 8, 27, 64 125
what is the cubed root of 125
5
what is 23
2 x 2 x 2 = 8
Factors of 20
1, 2, 4, 5, 10, 20
Multiples of 7
7, 14, 21, 28, 35, …
The first five prime numbers
2, 3, 5, 7, 11
Highest common factor of 12 and 8
4
Lowest common multiple of 12 and 8
24
3 + 5 x 3
18
-4 x -3
12
-3 x 2
-6
-10 ÷ 2
-5
-4 - 3
-7
-20 ÷ -5
4
The first 3 integers that satisfy x > 9
10, 11, 12
Cube root of 125
5
Square of 9
81
What does this say
3 < x < 8
x is greater than 3 and less than 8