Mathematics: Addition and Subtraction Practice for Number Bonds to 20

Enhance addition and subtraction skills through counting on and completing part-whole models to show number bonds to 10 and 20. The lessons include consolidation steps, fluency exercises, reasoning tasks, and problem-solving challenges to reinforce understanding and proficiency in basic math operations. Correct misconceptions, practice fluency, and explore different ways of representing number bonds up to 20 for improved mathematical proficiency.

• Mathematics
• Addition
• Subtraction
• Number Bonds
• Practice

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Uploaded on Jul 19, 2024 | 0 Views

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1. Addition & Subtraction Add by counting on Number bonds to 20 Block 1 Week 1

2. Lesson 5 Step: Consolidation

3. Fluency Complete the part-whole models to show bonds to 10. 10 10 4 2 6 ? 8 ?

4. Fluency Complete the part-whole models to show bonds to 20. 20 20 5 12 15 ? 8 ?

5. Fluency Complete the part-whole models to show bonds to 20. 20 20 1 13 19 ? 7 ?

6. Fluency Complete the part-whole models to show bonds to 20. 20 20 9 14 6 ? 11 ?

7. Fluency Complete the part-whole models to show bonds to 10. 20 20 3 18 17 ? 2 ?

8. Reasoning The part-whole model shows a number bond to 20. What mistake has been made? 3 The whole and a part has been mixed up. The whole should be 20 and the part should be 3 How could this be corrected? 17 20 Swap the 3 and 20 round so that 20 is the whole and the parts are 17 and 3.

9. Problem solving How many different ways can you complete the part-whole model below to show bonds to 20? There are 21 different part-whole models that can be made: 20 0, 20 1, 19 2, 18 3, 17 4, 16 5, 15 6, 14 7, 13 8, 12 9, 11 10, 10 11, 9 12, 8 13, 7 19, 1 14, 6 20, 0 15, 5 16, 4 17, 3 18, 2 ? ?