Calculate -2.5 × 4

Step by step, with the reason for every step · Negative fractions and decimals · Foundations

Step by step

Question: work out −2.5 × 4.

−2.5 × 4

25 × 4 = 100

1 digit after the point → 10.0

Minus times plus is minus.

Forget the points: 25 times 4 is 100.

The numbers have 1 digit after the point.

So the answer has 1 too: 10.0, which is −10.

= −10

So the answer is −10.

Answer

= −10

Try this one yourself, then check:

Work out −3 × 6

Show the answer

−18