# Addition and Subtraction Problems Using Mental or Written Methods (2)

In this worksheet, students must solve problems based on addition or subtraction of tangible objects, quantities and measures.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 100

Difficulty level:

### QUESTION 1 of 10

When you ADD, things get bigger, longer or more.

Example

Jane has 12 pencils and Bill has 15 pencils.

How many do they have in total?

Start at 12 and then add 10 and 5.

12 + 10 = 22

22 + 5 = 27

They have 27 pencils in total.

When you SUBTRACT, things get smaller, shorter, fewer or less.

Example

Jane has 27 marbles and gives 15 to her brother Bill.

How many does she have left?

Subtract 27 - 15.

Start at 27 and take away 10 then take away 5.

27 - 10 = 17

17 - 5 = 12

Jane has 12 left.

Jack has 5 apples, 6 bananas and 12 peaches.

How many pieces of fruit does he have in total?

It takes Ben 15 minutes to cycle to Jack's house.

Then they spend 12 minutes cycling to Anna's house.

How long did Ben spend cycling to get to Anna's house, in minutes?

(Just write the number.)

Emma has a bag of 20 sweets.

She eats 12 of them at the weekend.

How many sweets are left in the bag?

Anna has 32 coins and gives 14 of them to her brother.

How many coins does Anna have left?

Bill builds a model rocket that is 42 cm tall.

He adds an extra stage that is 9 cm tall.

How tall is it now in cm?

(Just write the number.)

Jack has 31 stamps in his collection.

Jill has 18 stamps in hers.

How many more stamps has Jack than Jill?

Bill has 27 stamps in one book and 15 in another.

How many stamps does he have altogether?

There are 63 people on a plane.

17 more people board the plane.

How many people are now on the plane?

There are 54 people at a party.

18 people leave early.

How many people are now at the party?

Tony has 55 bricks.

He uses 19 bricks to build a small wall.

How many bricks are left?

• Question 1

Jack has 5 apples, 6 bananas and 12 peaches.

How many pieces of fruit does he have in total?

23
EDDIE SAYS
We add 5 and 6 and 12.

5 + 6 = 11
11 + 12 = 23
• Question 2

It takes Ben 15 minutes to cycle to Jack's house.

Then they spend 12 minutes cycling to Anna's house.

How long did Ben spend cycling to get to Anna's house, in minutes?

(Just write the number.)

27
EDDIE SAYS

15 + 10 = 25
25 + 2 = 27
• Question 3

Emma has a bag of 20 sweets.

She eats 12 of them at the weekend.

How many sweets are left in the bag?

8
EDDIE SAYS
We subtract 20 - 12.

20 - 10 = 10
10 - 2 = 8
• Question 4

Anna has 32 coins and gives 14 of them to her brother.

How many coins does Anna have left?

18
EDDIE SAYS
We subtract 32 - 14.

32 - 10 = 22
22 - 4 = 18
• Question 5

Bill builds a model rocket that is 42 cm tall.

He adds an extra stage that is 9 cm tall.

How tall is it now in cm?

(Just write the number.)

51
EDDIE SAYS

42 + 9 = 51
• Question 6

Jack has 31 stamps in his collection.

Jill has 18 stamps in hers.

How many more stamps has Jack than Jill?

13
EDDIE SAYS
We subtract 31 - 18.

31 - 10 = 21
21 - 8 = 13
• Question 7

Bill has 27 stamps in one book and 15 in another.

How many stamps does he have altogether?

42
EDDIE SAYS

27 + 10 = 37
37 + 5 = 42
• Question 8

There are 63 people on a plane.

17 more people board the plane.

How many people are now on the plane?

80
EDDIE SAYS

63 + 10 = 73
73 + 7 = 80
• Question 9

There are 54 people at a party.

18 people leave early.

How many people are now at the party?

36
EDDIE SAYS
We subtract 54 - 18.

54 - 10 = 44
44 - 8 = 36
• Question 10

Tony has 55 bricks.

He uses 19 bricks to build a small wall.

How many bricks are left?

36
EDDIE SAYS
We subtract 55 - 19.

55 - 10 = 45
45 - 9 = 36
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