maths adding and subtracting - oundle ce primary school

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Page 1: Maths adding and subtracting - Oundle CE Primary School

Lesson 1

Page 2: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter

1. Look at the Tally chart. Which is the most popular type of chocolate?2. Which is the least favourite type of chocolate?

3. Fill in the Frequency (this is how many each tally is altogether.) 4. How many liked White chocolate?

5. How many people were included in the Tally?

6. How many more people liked Milk chocolate to Dark chocolate?

Page 3: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter

1. Look at the Tally chart. Which is the most popular type of chocolate?Milk2. Which is the least favourite type of chocolate? Dark3. Fill in the Frequency (this is how many each tally is altogether.) see chart4. How many liked White chocolate? 135. How many people were included in the Tally?5. 406. How many more people liked Milk chocolate to Dark chocolate? 9

22

5

13

Page 4: Maths adding and subtracting - Oundle CE Primary School

This week we are focussing on addition and subtraction.

The children have been taught this back in the Autumn term, so should have completed pages in their Maths No Problem books, therefore this week most work will be done in their exercise books.

Thank you

Page 5: Maths adding and subtracting - Oundle CE Primary School

Things to consider In Maths it is good practice to show your workings.

We want to see which method you have used.

Please don’t feel you have to send us every page of your Maths No Problem book, as we know this takes time.

Use the answers to mark your own work, this is a great way to learn as you can see where you may have made a mistake.

Thank you, Mrs King and Mr Nyczka.

Page 6: Maths adding and subtracting - Oundle CE Primary School

Lesson 1; Adding 1 and 2 digit numbers together

• Lesson Objective: To be able to add a 2-digit number and tens.

• Success Criteria:• I can add a 2-digit number and tens without

regrouping, using any method

Page 7: Maths adding and subtracting - Oundle CE Primary School

What is the best, most efficient method to use?

Notice how the child on the right is adding 20- what do we know about this number?

Page 8: Maths adding and subtracting - Oundle CE Primary School
Page 9: Maths adding and subtracting - Oundle CE Primary School
Page 10: Maths adding and subtracting - Oundle CE Primary School

Method 4 Use a 100 square to count on in 10’s

Start at 19. Remember when we add on 10, we simply go down one on the 100 square.

We need to add 20 so this time we need count 2 down.

Interactive 100 square; https://www.topmarks.co.uk/learning-to-count/paint-the-squares

Page 11: Maths adding and subtracting - Oundle CE Primary School

Now it’s your turn

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Please use your preferred method, if you’re not sure then why not try them all?

Page 13: Maths adding and subtracting - Oundle CE Primary School

Answers

20403070

90

8060

1001050

40605080

30

607050

9040

70

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33

43

53

76

65

57

Page 15: Maths adding and subtracting - Oundle CE Primary School

Lesson 2

Page 16: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter 1.

2.

3.

Page 17: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter 1.

2.

3.

9

Page 18: Maths adding and subtracting - Oundle CE Primary School

Lesson 2; Adding 1 and 2 digit numbers together

• Lesson Objective: To be able to add two 2-digit numbers without renaming

• Success Criteria:I can add two 2-digit numbers without regrouping using any method

Page 19: Maths adding and subtracting - Oundle CE Primary School
Page 20: Maths adding and subtracting - Oundle CE Primary School

You can draw the tens and ones to help you.

Page 21: Maths adding and subtracting - Oundle CE Primary School
Page 22: Maths adding and subtracting - Oundle CE Primary School

Now find the answer to this;

Page 23: Maths adding and subtracting - Oundle CE Primary School

Answers

10 7 20 1

3820 4 10 5

39

39

3 9 7 3

73

Page 24: Maths adding and subtracting - Oundle CE Primary School

15

24 17

41 24

Page 25: Maths adding and subtracting - Oundle CE Primary School

Lesson 3

Page 26: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter

1.

2.

3.

Page 27: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter- ANSWERS

1.

2.

3.

54

7

Page 28: Maths adding and subtracting - Oundle CE Primary School

Lesson 3: Subtracting

• Lesson Objective:To be able to subtract a 2-digit number from another 2-digit number without renaming• Success Criteria:I can use concrete materials to show subtraction of two 2-digit numbers without renaming.I can use a number bond diagram and are beginning to use the column method to show their work

Page 29: Maths adding and subtracting - Oundle CE Primary School

Lesson 3- Subtracting

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Page 32: Maths adding and subtracting - Oundle CE Primary School

Answers on the next pages

Page 33: Maths adding and subtracting - Oundle CE Primary School
Page 34: Maths adding and subtracting - Oundle CE Primary School

Thursday

Page 35: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter1.

2.

3.

Page 36: Maths adding and subtracting - Oundle CE Primary School

Year 2- Starter- ANSWERS 1.

2.

3.

15 – 9 = 6

6 more dolls

Page 37: Maths adding and subtracting - Oundle CE Primary School

Lesson 4: Adding and subtracting

• Lesson Objective:• To be able to apply knowledge of addition and

subtraction to solve problems• Success Criteria:

• I will use an effective method to solve the problem.

• I will check whether to add or subtract• I know that the opposite of add is

subtract (inverse)

Page 38: Maths adding and subtracting - Oundle CE Primary School

https://www.topmarks.co.uk/number-facts/number-fact-families

Maths subtracting and adding game on topmarks.

Page 39: Maths adding and subtracting - Oundle CE Primary School

What does inverse mean?

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Page 41: Maths adding and subtracting - Oundle CE Primary School

Now your turn, using only the 3 numbers in the triangles. Can you complete the number sentences below?

Page 42: Maths adding and subtracting - Oundle CE Primary School