Addition Worksheet - KS3 - Intermediate
Addition worksheet for Key Stage 3 / Year 7-9 (Ages 11-14). Intermediate level maths practice, aligned to the UK National Curriculum. Print-ready with answer key included.
Intermediate Addition Mastery
Key Stage 3 / Ages 11-14 / Intermediate Level
Instructions: This worksheet focuses on enhancing your addition skills through a variety of engaging activities. You'll solve equations, analyze data, and work with real-world problems. Approach each task carefully, showing all your working clearly.
Solving Addition Equations
Solve each equation by finding the value of x. Show all your steps clearly in the space provided.
1. x + 7 = 15
2. 2x + 3 = 11
3. 3x - 5 = 16
4. 4x + 9 = 25
5. 5x - 2 = 23
6. 6x + 4 = 34
7. 7x - 8 = 41
8. 8x + 6 = 54
Real-World Addition Problems
Read each scenario carefully and solve the problems by applying addition. Write your answers in the boxes provided.
1. Sarah bought 3 books for £12 each and 2 pens for £3 each. How much did she spend in total?
2. A train travels 150 km in the morning and 200 km in the afternoon. What is the total distance covered?
3. A baker made 24 loaves of bread in the morning and 18 in the afternoon. How many loaves did he make in total?
4. A farmer harvested 350 apples on Monday and 475 apples on Tuesday. What is the total number of apples harvested?
Data Analysis with Addition
Analyse the data in the table and answer the questions below. Calculate totals and averages as required.
| Day | Hours Worked | Tasks Completed |
| Monday | 8 | 5 |
| Tuesday | 7 | 6 |
| Wednesday | 9 | 7 |
1. What is the total number of hours worked over the four days?
2. Calculate the average number of tasks completed per day.
Addition with Fractions
Add the following fractions. Simplify your answers where possible. Write your answers in the boxes provided.
1. 1/2 + 3/4
2. 2/3 + 1/6
3. 5/8 + 3/8
4. 7/10 + 2/5
Addition Word Problems
Solve these word problems using addition. Show your working and write the final answer in the box.
1. A library has 1,250 fiction books and 980 non-fiction books. How many books are there in total?
2. A school raised £345 for charity in January and £478 in February. What is the total amount raised?
Addition with Decimals
Add the following decimal numbers. Ensure your answers are accurate to two decimal places.
1. 12.34 + 7.89
2. 45.67 + 32.12
3. 78.56 + 21.44
4. 9.99 + 5.01
Practical Addition Scenarios
Use addition to solve these practical scenarios. Write your answers in the boxes provided.
1. A chef uses 250g of flour and 150g of sugar to bake a cake. What is the total weight of the ingredients used?
2. A gardener planted 35 tulips and 45 daffodils. How many flowers were planted in total?
Addition in Context
Apply your addition skills to solve these contextual problems. Provide clear working and write your answers in the boxes.
1. A car travels 120 miles on Monday and 135 miles on Tuesday. What is the total distance travelled?
2. A shop sold 200 items on Saturday and 150 items on Sunday. How many items were sold over the weekend?
Activity 1: 8 ; 4 ; 7 ; 4 ; 5 ; 5 ; 7 ; 6
Activity 2: £42 ; 350 km ; 42 loaves ; 825 apples
Activity 3: 30 ; 5.5
Activity 4: 5/4 ; 5/6 ; 1 ; 9/10
Activity 5: 2,230 books ; £823
Activity 6: 20.23 ; 77.79 ; 100.00 ; 15.00
Activity 7: 400g ; 80 flowers
Activity 8: 255 miles ; 350 items
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