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Mental Calculations + and -

Mental Calculations + and -. Mental Learning Objective. I can rapidly recall my number bonds up to 20. Mental Learning Objective. I can rapidly recall my number bonds up to 20. Main Learning Objective. I am able to add or subtract 10 or 100 to any number in my head.

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Mental Calculations + and -

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  1. Mental Calculations + and -

  2. Mental Learning Objective I can rapidly recall my number bonds up to 20

  3. Mental Learning Objective I can rapidly recall my number bonds up to 20

  4. Main Learning Objective I am able to add or subtract 10 or 100 to any number in my head.

  5. Able to add or subtract 10’s quickly. What is 45 + 10? T U T U T U

  6. Able to add or subtract 10’s quickly. What is 55 + 40? T U T U T U

  7. Able to add or subtract 10’s quickly. What is 55 - 40? T U T U T U

  8. Able to add or subtract 10’s quickly. What is 75 + 30? T U T U T U

  9. Able to add or subtract 100’s quickly. What is 75 + 100? HTU HTU HTU

  10. Able to add or subtract 100’s quickly. What is 175 + 200? HTU HTU HTU

  11. Able to add or subtract 100’s quickly. What is 275 – 200? HTU HTU HTU

  12. Able to add or subtract 100’s quickly. What is 235 + 200? HTU HTU HTU

  13. Main Learning Objective I am able to add 10 or 100 to a number in my head.

  14. Plenary • In this lesson, I practised my number bonds to 20. • I learnt how to add and subtract 10 and 100 from any number in my head.

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