Detailed Explanation of Adding Two Multiples of Ten 🔢✨

When we add two multiples of ten, we are adding numbers like 10, 20, 30, 40, and so on. These are numbers that end with a zero. Adding these numbers is easy because we can think about the tens and add them together.

What Are Multiples of Ten? 🧮

Multiples of ten are numbers like 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100. They always end in zero, and they show the group of tens.

How to Add Two Multiples of Ten ➕

  1. Look at the tens: For example, if you want to add 20 + 30, you can think of 20 as 2 tens and 30 as 3 tens.
  2. Add the tens: 2 tens + 3 tens = 5 tens.
  3. Write the answer: 5 tens is 50, so 20 + 30 = 50.

Example 1: Adding 40 + 50 🧩

  • 40 has 4 tens.
  • 50 has 5 tens.
  • Add the tens: 4 + 5 = 9 tens.
  • 9 tens = 90.
  • So, 40 + 50 = 90.

Example 2: Adding 10 + 70 🧩

  • 10 has 1 ten.
  • 70 has 7 tens.
  • Add the tens: 1 + 7 = 8 tens.
  • 8 tens = 80.
  • So, 10 + 70 = 80.

Practice Tips 🎯

  • Remember, when adding multiples of ten, just add the number of tens.
  • You can use your fingers or draw groups of ten dots to help you.
  • Try using number cards or a number line to see how the numbers move.

By understanding that multiples of ten are made of tens, adding becomes quicker and easier! Keep practising with different multiples of ten to get really good at it.

20 Examination-style Questions with Answers on Adding Two Multiples of Ten for Year 2 📝🎒

Here are 20 examination-style questions on adding two multiples of ten for Year 2 students, following the UK National Curriculum. Each question involves adding two multiples of ten, helping pupils practise their addition skills with tens.

Questions ❓

  1. What is 30 + 20?
  2. Add 50 + 40.
  3. Find the total of 70 + 10.
  4. What do you get if you add 90 + 30?
  5. Add 20 + 80.
  6. What is 60 + 20?
  7. Find the sum of 40 + 70.
  8. What is the result of 10 + 90?
  9. Add 80 + 30.
  10. What is 50 + 50?
  11. Find 20 + 60.
  12. What do you get if you add 70 + 20?
  13. Add 30 + 90.
  14. Find the total of 10 + 40.
  15. What is the sum of 60 + 30?
  16. Add 40 + 50.
  17. What is 80 + 10?
  18. Find the result of 70 + 70.
  19. What is 90 + 20?
  20. Add 30 + 40.

Answers ✔️

  1. 50
  2. 90
  3. 80
  4. 120
  5. 100
  6. 80
  7. 110
  8. 100
  9. 110
  10. 100
  11. 80
  12. 90
  13. 120
  14. 50
  15. 90
  16. 90
  17. 90
  18. 140
  19. 110
  20. 70

These questions give Year 2 students the chance to practise adding two multiples of ten confidently and clearly. Remember to count the tens carefully when adding and check your answers!