# Solve a Variety of Addition and Subtraction Problems

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

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 100

Difficulty level:

#### Worksheet Overview

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

Example

Jane has 12 pencils.

Bill has 15 pencils.

How many do they have in total?

Start at 12 and count on 15 to get 27 pencils.

12 ... 13... 14... 15... 16... 17... 18... 19... 20... 21... 22... 23... 24... 25... 26... 27

Do not count the number 12 itself!

12 + 15 = 27

That's a lot of pencils!

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

Example

Jane has 17 marbles and gives 5 to her brother Bill.

How many does she have left?

Subtract 5 from 17 (17 - 5).

Start at 17 and count back 5.

12... 13... 14... 15... 16... 17

Do not count the number 17 itself!

17 - 5 = 12

She has 12 left.

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