# Big Ideas of Mathematics: - I See Maths

A tub contains 24 coins. Saj takes 5 coins. Joss takes 10 coins. How many coins are left in the tub?

en runs for 15 minutes every day. How long does she run for each week? Give your answer in hours and minutes.

Big Ideas of Mathematics: Subtraction and Additive Reasoning Example A: Jen has 8 sweets. Kim has 5 sweets. How many more sweets does Jen have? Example B: Tim had some money. He was

given 8 more by his Dad. Then he spent 5. How much more/less money does Tim have now? Example C: Kam had 8 grapes. He ate 5. How many does he have left?

There are children at the playground. There are

more boys than girls. There are 8 children at the playground. There are more boys than girls. There are 8 children at the playground.

There are 2 more boys than girls. There are 10 children at the playground. There are more girls than boys. There are 10 children at the playground.

There are 4 more girls than boys. A pencil and a rubber cost 40p. The pencil costs 10p more than the rubber. How much does the rubber cost?

The sum of two numbers is 9. The difference between the numbers is 4. What are the numbers? 72 less than 265 Tim:

- 72 265 Rob:

Sam: 265 - 72 265

- 72 Big Ideas of Mathematics: Multiplicative reasoning Big Ideas of Mathematics:

Multiplicative reasoning Example A: Ben has 3 times as many conkers as Holly. Ben and Holly have 12 conkers in total. How many conkers does Holly have? Example B:

Zara is 3 years old. Helen is 5 years old. When Zara is 9 years old, how old will Whats the same? Whats different?

65 4 64 5 54 6

Whats the same? Whats different? 65 4 64 5

54 6 All answers are the same

the same Whats the same? Whats different? 65 4 = 260

54 6 = 324 60 4 = 240 5 4 = 20 50 6 = 300

4 6 = 24 64 5 = 320 60 5 = 300 4 5 = 20

All answers are the same All different

8 5 8

4 5 0

8 80 50

0 5 80

50 4 8

4 5 80

50 0 8

4 0 5

80 50 4

4 mirror Variation 72=

83= 94= Variation 72= 83=

94= 6 + ___ = 10 16 + ___ = 20 26 + ___ =

30 16 + ___ = 30 Variation 72=

83= 94= 6 + ___ = 10 16 + ___ = 20

26 + ___ = 30 16 + ___ = 30 Variation

50% of 60 = 10% of 60 = 40% of 60 = 60% of 40 = Variation

50% of 60 = 12 10 = 10% of 60 =

12 5 = 40% of 60 = 14 5 =

60% of 40 = 7 10 = 2

2 2 2

Quantity Recognition Base-5/Base-10 Parts in a whole Quantity

Recognition Base-5/Base-10 Parts in a whole Quantity Recognition

Base-5/Base-10 Parts in a whole ontinue and make patterns pot and correct mistakes

epresent a pattern with other objec dentify unit of repeat Circular patterns

Circular, fixed spaces Pre-teaching and plenary Feedback to extend thinking

Storage and retrieval strength Individual and pair discussion A tub contains 24 coins. Saj takes 5 coins. Joss takes 10 coins.

How many coins are left in the tub? en runs for 15 minutes every day. How long does she run for each week?

1.80 Drink: 30p Zara has 10. How many sandwiches can she

afford? Zara Sandwich: 1.80

Drink: 30p Zara has 10. How many sandwiches can she afford?

Zara Sandwich: 1.80 Drink: 30p

Zara has 10. How many sandwiches can she afford?

Zara Sandwich: 1.80 Drink: 30p

Zara wants to buy 3 sandwiches and 2 drinks. She has 5. How much more money does she need? Zara

Sandwich: 1.80 Drink: 30p Zara wants to buy 3 sandwiches

and 2 drinks. She has 5. How much more money does she need? Zara

Sandwich: 1.80 Drink: 30p Zara wants to buy 3 sandwiches and 2 drinks. She has 5.

How much more money does she need? Zara Sandwich:

1.80 Drink: 30p Zara wants to buy 3 sandwiches and 2 drinks. She has 5. How much change does she

get? Zara Sandwich: 1.80

Drink: 30p Zara wants to buy 3 sandwiches and 2 drinks. She has 5. How much change does she get?

Zara Sandwich: 1.80 Drink: 30p

Zara wants to buy 3 sandwiches and 2 drinks. She has 10. How much change does she get?

Choose 3 consecutive single-digit numbers. Choose 3 consecutive single-digit numbers. Add them. Choose 3 consecutive single-digit numbers.

Add them. Multiply the middle number by 3. What do you notice? John goes on a 3-day holiday. He makes 15 sandcastles.

Each day he makes one more sandcastle than the day before. How many sandcastles does he make each day?

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