Åk 6–9
 
English/Soomaali
3.5 Exercises - Addition and Subtraction
1. Which calculation operation is shown on the number line?
a) -4 + 5 = 1 b) 7 - 3 = 4
c) -3 -5 = -8 d) 2 + 6 = 8
 
 
 
2. Write a mathematical expression for the following sentences.
Ex Nils gave away 4 of his 10 kr. 10 - 4
a)

Jan had 5 points and lost  7.

b)

Nina missed 12 points and won 9.

c)

Lina gave away 4 of her 15 pieces of candy.

d)

Helen had 10 pens and lost 2 of them.

e)

Anna took 20 step forward and then took 7 steps back.

f)

The temperature rose 3 degrees from -10 degrees.

g)

The temperature fell 2 degrees from -6 degrees.

h)

The temperature rose from -5 degrees to 8 degrees.

 
 
3. Calculate and write the results.
a) 9 - 2 =
b) -5 + 8 =
c) -3 - 10 =
d) 15 - 11 =
e) 25 + 4 =
f) -9 + 6 =
g) -7 - 8 =
h) 8 - 20 =
 
 
4. Complete the table so that the equality is correct.
Ex 2 + 1 = 3
a) 9 + (-5) =
b) 3 + = 2
c) + 2 = -10
d) 7 + 1 =
e) + 4 = -6
f) -6 + 7 =
 
 
5. Complete the table so that the equality is correct.
a) 3 + (-3) =
b) -5 + = 0
c) + (-4) = 0
d) + 8 = 0
e) -7 + = 0