What are square numbers?
Square numbers are the result of squaring of a number.
Example:
9 is a square number because 3 x 3 = 9
Example:
9 is a square number because 3 x 3 = 9
What is 14 out of 20 as a percentage?
70%
Calculator method
Non-calculator method
Make it an equivalent fraction with a denominator of 100 (in this case by multiplying the top and bottom by five).
Calculator method
Non-calculator method
Make it an equivalent fraction with a denominator of 100 (in this case by multiplying the top and bottom by five).
How do you multiply fractions together?
Just multiply the numerators together and multiply the denominators together.
Example:
And cancel it down if you can - so this would be
Example:
And cancel it down if you can - so this would be
How do you divide fractions?
Flip the second fraction and then multiply the 2 fractions together (times the numerators together and times the denominators together).
Example:
*Here we've given our answer as a mixed number too.
Example:
*Here we've given our answer as a mixed number too.
What is a factor?
A number that you can divide another number by.
Example:
1, 2, 3, 4, 6 and 12 are all factors of 12 because you can divide 12 by all these numbers.
Example:
1, 2, 3, 4, 6 and 12 are all factors of 12 because you can divide 12 by all these numbers.
What is a multiple?
A multiple of a number is any number in that times table.
Example:
Multiples of 10 are 10, 20, 30, 40, 50, ..., ..., ...
Multiples of 4 are 4, 8, 12, 16, 20, 24, ..., ..., ...
Example:
Multiples of 10 are 10, 20, 30, 40, 50, ..., ..., ...
Multiples of 4 are 4, 8, 12, 16, 20, 24, ..., ..., ...
How can I find 37% of 420 with a calculator
Method 1 - Using the percentage button
Simply enter
Method 2 - Change to a decimal first
37% is 0.37 as a decimal so enter...
Either way you should get 155.4
Simply enter
Method 2 - Change to a decimal first
37% is 0.37 as a decimal so enter...
Either way you should get 155.4
Estimate the answer to 8.78 x 3.92 - 5.24
31
Round each number to one significant figure...
9 x 4 - 5 = 36 - 5 = 31
Remember
When the questions says estimate you will not get marks if you just work it out so do what it says - round the numbers first!!!
Round each number to one significant figure...
9 x 4 - 5 = 36 - 5 = 31
Remember
When the questions says estimate you will not get marks if you just work it out so do what it says - round the numbers first!!!
Kartensatzinfo:
Autor: mrfoxton
Oberthema: Mathematics
Thema: General
Veröffentlicht: 07.02.2010
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