First Year maths · M.16 · Operations with fractions and decimals
Multiply and divide decimals including negatives
Line up the decimal points to add or subtract. The sign rules are the same as for integers.
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See worked examples
Evaluate: 9.5 × (−2.6)
Answer: -24.7
Evaluate: −31.45 ÷ 3.7
Answer: -8.5
Evaluate: −2.56 ÷ 3.2
Answer: -0.8
Tip: Line up the decimal points to add or subtract. The sign rules are the same as for integers.
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