Add and subtract to 3 decimal places test questions

1

What is \({3.7} + {12.62}\) ?

2

What is \({7} - {0.64}\) ?

3

Calculate \({4.15}+{6.2}\)

4

Calculate \({6.7}-{3.27}\)

5

Calculate \({2.701}+{3.298}\)

6

Moira runs the 100 metres in a time of 12.782 seconds and Claire runs the 100 metres in a time of 11.49 seconds.

How much faster was Claire than Moira?

7

John has to add a 1.3m cable on to an existing 0.85m cable in order to move a plug socket in his garage.

How long is the new cable?

8

To raise money for charity John and Simon wash cars on Saturday.

John collects £83.20 and Simon collects £75.75. How much more money did John raise than Simon?

9

Luka is an entomologist and studies ants.

He noticed that an adult carpenter ant measures 2.456cm and an adult bullet ant measures 2.89cm.

How much larger is the bullet ant?

10

A standard WiFi signal can reach up to 3.82m. When a booster is added it will increase this distance by 1.85m.

How far will the new signal reach when the new booster is added.