Fractions Flashcards
What is the numerator?
The number of parts taken
What is the denominator?
Number of parts in total
What is 3/7 as a worded fraction?
There are 7 pieces in total and we take 3 of them
What is a fraction?
A fraction is a part of a whole
What is an improper fraction?
A fraction that is too heavy
What is a mapped fraction?
A fraction that has both whole numbers and fractions
1/4 + 3/8
1/4 = 2/8
2/8 + 3/8 = 5/8
3/4 - 1/16
3/4 = 12/16
12/16 - 1/16 = 11/16
What is 6/100 as a decimal and as a percentage
6/100 = 0.06 = 6%
What is 2/5 as a decimal?
2/5 = 40/100 = 0.4
What is 3 1/4 - 1 5/12
3 - 1 = 4 1/4 - 5/12 3/12 - 5/12 = -2/12 (Take away the minus 2) 1 5/6
What is 3/8 as a decimal?
0.375
_______
3/8 = 8 /3
When you use ‘of’ what are you doing?
Multiplying
What is an integer?
An integer is a whole number
1/2 X 2/3
1 X 2 = 2
_
2 X 3 = 6 = 1/3
When multiplying what must you always do?
Convert into an improper fraction
What do you not need to do when multiplying fractions?
You don’t need to convert the numbers to make a common denominator when multiplying
What is the reciprocal?
A reciprocal is a number that when multiplied by a given number is equal to 1
What is 1/4 the reciprocal of?
4
4 X 1/4 = 1
What is 1/3 the reciprocal of?
3
3 X 1/3 = 1
What is the reciprocal of 3/4?
3/4 X 4/3 = 3x4/ 4x3 = 12/12 = 1
What is 3/1 the same as?
3
Write 3 or you may not get the mark
2/3 divided by 1/7
2/3 divided by 1/7 = 2/3 X 7/1 = 14/3
SKIP the 2/3, FLIP the 1/7 and MULTIPLY them together
Does 0 have a reciprocal?
No
How do you convert a fraction into a decimal?
Divide the numerator by the denominator
