B. E. D. M. A. S.
is a word to help you to remember what to do first in a calculation involving more than one operation.
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"Let me do more operations!" |
BEDMAS means:
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Brackets
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Do these first
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Work out the value of any calculations inside brackets.
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Exponents
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Work out the value of any numbers with exponents.
Sometimes shown as 'of ' meaning multiply.
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Division
Multiplication
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If these two operations occur together, work from left to right in your calculation.
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Addition
Subtraction
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Do these last
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If these two operations occur together, work from left to right in your calculation.
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Get some practice at using brackets with the four basic operations:
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Answers |
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5 + 3 × 2
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= 5 + 6
= 11
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6 + (5 + 3)
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= 6 + 8
= 14
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20 − 3 × 5 + 4
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= 20 − 15 + 4
= 5 + 4
= 9
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2 × 52
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= 2 × 25
= 50
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| (4 + 6) ÷ (2 + 3) |
= 10 ÷ 5
= 2 |
Care should be taken when using a calculator to do calculations of this type.
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