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Doubles & using Near Doubles to add:       Maths Lesson 1 - KS1

  • by Miss Lovell & James D. Lewis
  • 01 Feb, 2018

Lesson Learning Objectives:  

  1. To investigate doubles
  2. To use near doubles to calculate

All children should be able to:

Recognise that doubles are twice the size (x2).

Learn key words


Most Children should be able to:

Use their knowledge of number bonds to ten (such as 5 + 5) to recognise simple doubles.

To use knowledge of doubles to calculate near doubles (a number +1)


Some Children should be able to:

Use near double knowledge to calculate near doubles (a number +2)


Buy one and I get one free - I get double the amount I pay for 

Use number cards 1- 10 to make double the amount using unifix cubes

Near doubles use the idea that if you know that 5 + 5 = 10 (a number bond)   then 5 + 4 = 9 because 4 is one less than 5.

9 =  5 + 4


11 = 6 + 5


4 + 5 =     4 + 4 + 1 =  9


4 + 3 =     3 + 3 + 1  = 7


Extension:

Use cubes to show the working out of a range of new near double sums.


Key Words

double

near double

known fact

number bond


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