Grade 7 Maths: Common fractions poster

A one-page CAPS Grade 7 Maths poster on common fractions (Fractions and decimals), with the key ideas, key words and a tip to remember.

CAPS Grade 7MathsFractions and decimalsFree

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Maths · Grade 7 · Fractions and decimals

Common fractions

1Equivalent fractions

Multiply or divide the numerator and the denominator by the same number.

Example

23 = 46 (× 2)
1824 = 34 (÷ 6)

Change to a common denominator, then compare the numerators.

Example

35 and 710
610 < 710, so 35 < 710

Find a common denominator first. Then add or subtract the numerators only.

Example

12 + 25 = 510 + 410 = 910
78 − 13 = 2124 − 824 = 1324

Add or subtract the whole numbers and the fractions. Regroup if needed. Change to improper fractions to multiply.

Example

1 13 + 2 12 = 1 26 + 2 36 = 3 56
2 34 = 114

Multiply the numerators. Multiply the denominators. Simplify.
Fraction of a whole number: divide by the denominator, then multiply by the numerator.

Example

34 × 29 = 636 = 16
25 of 30 = 30 ÷ 5 × 2 = 12

A fraction, a decimal and a percentage can name the same amount.

Example

12 = 0,5 = 50%
710 = 0,7 = 70%

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