Addition and subtraction (1)

Positive & negative integers

Name: ______________________________Date: ______________Score: ______ / 20

1.
The temperature is -30 °C. It rises by 5 °C. What is the new temperature?
°C
2.
The temperature is -30 °C. It falls by 5 °C. What is the new temperature?
°C
3.
The temperature at 8 a.m. is -1 °C. By midday it is 4 degrees warmer. What is the temperature at midday?
°C
4.
The temperature in Moscow is -10 °C. It rises by 5 °C. What is the new temperature?
°C
5.
Calculate: -7 + 2
6.
Calculate: 4 - 8
7.
Calculate: -1 + 2
8.
The temperature is -2 °C and falls by 4 °C. What is the new temperature?
1. A-6 °C
2. B-2 °C
3. C6 °C
4. D2 °C
9.
Calculate: 2 - 5
10.
Calculate: -5 + 8
11.
Calculate: -9 + 3
1. A-12
2. B-6
3. C6
4. D-3
12.
London is 4 °C and Oslo is -5 °C. What is the difference in temperature between London and Oslo?
°C
13.
Moscow is -10 °C and Ulaanbaatar is -29 °C. What is the difference in temperature between them?
°C
14.
In a table the warmest city is London at 4 °C and the coldest is Ulaanbaatar at -29 °C. What is the difference between the warmest and coldest city?
°C
15.
Tallinn is -1 °C and Moscow is -10 °C. What is the difference in temperature between Tallinn and Moscow?
°C
16.
Find the difference between 3 and -4.
17.
Find the difference between 5 and -5.
1. A0
2. B5
3. C10
4. D-10
18.
The difference between two temperatures is always a positive number.
True False
19.
The difference between -6 and -2 is 4.
True False
20.
Estimate the answer to 34 405 + 90 253 by rounding each number.
1. A110 000
2. B120 000
3. C130 000
4. D140 000

Answer key

Addition and subtraction (1) — Positive & negative integers