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Key Stage 1Ages 5-7Computing

Free Algorithms Worksheets for Key Stage 1

Step-by-step problem solving. Download free printable computing worksheets designed for Key Stage 1 students (ages 5-7), aligned to the UK National Curriculum.

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What Your Child Will Learn

Define what an algorithm is
Write a clear step-by-step algorithm for an everyday task
Read and follow a simple flowchart
Identify errors in a given algorithm

Sample Algorithms Questions for Key Stage 1

Here are examples of the types of questions your child will practice:

1

What is an algorithm?

easyshort answer
2

True or false: An algorithm must have a clear start and end.

easytrue false
3

Write an algorithm for making a sandwich in four steps.

easyshort answer
4

What shape represents a decision in a flowchart?

mediummultiple choice

Hint: Diamond

5

Put the steps for crossing the road in order: look right, look left, walk, stop.

easyshort answer
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Skills Your Child Will Build

Decomposition
Pattern recognition
Abstraction
Logical reasoning

Real-World Applications

Understanding algorithms helps children in everyday situations:

Search engines
GPS navigation
Social media feeds
Game design

Common Mistakes to Watch For

Help your child avoid these common algorithms mistakes:

  • !Imprecise instructions (not unambiguous)
  • !Infinite loops in design
  • !Missing edge cases
  • !Confusing algorithm with program

Learning Progression

After mastering these foundations, students will progress to more complex algorithms skills in Key Stage 2, building on the concepts learned here.

Sample Algorithms Worksheets

1 available

What is an Algorithm?

beginner
80

Algorithms Worksheet Preview

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What is an Algorithm?

Key Stage 1 · beginner difficulty

Preview

Activity 1: Order the Steps

Number the steps 1-4 to make a jam sandwich

___ Spread jam on one slice of bread
___ Get two slices of bread
___ Put the two slices together
___ Get the jam jar

Activity 2: Write Your Own Algorithm

Write 4 steps to brush your teeth

Step 1: ___________________________________
Step 2: ___________________________________
Step 3: ___________________________________
Step 4: ___________________________________
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Tips for Teaching Algorithms

1Use everyday instructions as starting algorithms
2Flowcharts help visualise branching logic
3Trace tables make algorithm tracing systematic
4Decomposition: breaking a problem into sub-problems is the key skill

More Computing Topics for Key Stage 1

CodingInternet Safety

Algorithms for Other Age Groups

Early Years

Ages 0-2

Nursery

Ages 3-4

Reception

Ages 4-5

Key Stage 2

Ages 7-11

Key Stage 3

Ages 11-14

GCSE

Ages 14-16

A-Level

Ages 16-18

Frequently Asked Questions

What algorithms topics are covered in these worksheets?▼
Our algorithms worksheets for Key Stage 1 cover all aspects of step-by-step problem solving as required by the UK National Curriculum. Each worksheet is designed to build skills progressively from foundation to challenge level.
Are these algorithms worksheets suitable for Key Stage 1?▼
Yes, these worksheets are specifically designed for Key Stage 1 students (ages 5-7). The content difficulty and question types are carefully matched to National Curriculum expectations for this age group.
How can I use these algorithms worksheets effectively?▼
We recommend 15-20 minutes of focused practice per session. Use the worksheets to reinforce concepts taught at school, identify areas needing more practice, and build confidence. Every worksheet includes an answer key for easy self-assessment.
Do the algorithms worksheets include answer keys?▼
Yes, every worksheet comes with a complete answer key on a separate page. This makes it easy for parents to check homework, teachers to mark work, and students to self-assess their understanding.

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