Modual 5 Flashcards
Simplify 8/16
4/8 = 2/4 = 1/2
Give some frac tions equivalent to 6/12
3/6, 12/24, 18/36
Give 3 equivalent fractions to 6/12
3/6
12/24
1/2
How do you multiple a fraction?
e.g. 3 4
- x -
5 7
Multiple the top and the bottom separately
e.g. 3x4 12
—- = —
5x7 35
How do you divide a fraction?
e.g. 3 1
- / -
4 3
You flip the second fraction and than multiple.
e.g. 3 3 3x3 9
- x - = —- = –
4 1 4x1 4
How do you add/ subtract a fraction?
1) get the bottom line the same number
2) add/subtract the top line only!
Which one is a mixed number and which one is a improper fraction?
A) 6 2/3
B) 8/3
A = mixed number B = improper fraction
How do you add decimal numbers? e.g. 0.7 + 0.5
The way you add normal numbers
e.g. 2.2
How do you subtract decimals? e.g. 2.7 - 1.3
The way you would subtract normal numbers?
e.g. 1.4
How do you multiple decimals? e.g. 2.5 x 6.9
1) Forget about the decimal place and multiple as a whole number e.g. 25 x 69
2) Then put the decimal point in the answer - it will have as many decimal places as the two original numbers combined e.g. 17.25
How do you work out a fraction to a decimal? e.g. 1/2
Divide e.g. 1 / 2
How do you put a decimal into a percentage? e.g. 0.5
X by 100 e.g. 0.5 x 100 = 50%
How do you convert a percentage to a decimal? e.g. 50%
/ by 100 e.g. 50/100 = 0.5
How do you convert a decimal to a fraction? e.g. 0.5
= 5/10 = 1/2