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 in Moscow is -10 °C. It rises by 5 °C. What is the new temperature?
°C
3.
Calculate: 4 - 8
4.
Calculate: 2 - 5
5.
Calculate: -9 + 3
1. A-12
2. B-6
3. C6
4. D-3
6.
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
7.
Find the difference between 3 and -4.
8.
The difference between -6 and -2 is 4.
True False
9.
Estimate the answer to 278 410 - 139 321 by rounding each number.
1. A120 000
2. B130 000
3. C140 000
4. D150 000
10.
Work out 36 804 - 5724.
11.
The flight distances from Dubai are: Buenos Aires 13 656 km, Cairo 2419 km, Karachi 1190 km. What is the total distance for one trip to each of the three cities?
km
12.
The flight to Buenos Aires is 13 656 km and to New York is 11 020 km. How much further is Buenos Aires than New York?
km
13.
The temperature at Coldpark is -3 °C. It rises by 5 °C. What is the new temperature?
°C
14.
Put these city temperatures in order, from coldest to warmest.
Write the order (coldest to warmest) in the boxes:
- ?London 4 °C
- ?Moscow -10 °C
- ?Oslo -5 °C
- ?Tokyo 2 °C
- ?Ulaanbaatar -29 °C
15.
The temperature is 70 °C. It rises by 9 °C. What is the new temperature?
°C
16.
The temperature in Moscow is 30 °C. It rises by 3 °C. What is the new temperature?
°C
17.
Calculate: 3 - 2
18.
Calculate: 7 + 2
19.
Moscow is 55 °C and Ulaanbaatar is 10 °C. What is the difference in temperature between them?
°C
20.
Find the difference between 9 and 6.

Answer key

Addition and subtraction (1) — Positive & negative integers

1.-25 °C
2.-5 °C
3.-4
4.-3
5.B. -6
6.33 °C
7.7
8.True
9.C. 140 000
10.31080
11.17265 km
12.2636 km
13.2 °C
14.Ulaanbaatar -29 °C, Moscow -10 °C, Oslo -5 °C, Tokyo 2 °C, London 4 °C
15.79 °C
16.33 °C
17.1
18.9
19.45 °C
20.3