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**Mathematical Challenges**

Years 1 and 2

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Teaching Objectives Four pin bowling – Solve mathematical problems or puzzles. Know addition facts up to 10. Pick a pair - Solve mathematical problems or puzzles. Sum up - Solve mathematical problems or puzzles. Add three small numbers mentally. Birds’ eggs - Solve mathematical problems or puzzles. Fireworks - Solve mathematical problems or puzzles. Count on in steps of 3 or 4. Birthdays - Solve mathematical problems or puzzles. Use known number facts to add mentally. Carry out simple multiplication.

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Four Pin Bowling Which pins must Joshua knock down to score exactly 5 ? Find 2 different ways : To score 5 To score 6 To score 7 1 3 4 2

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**How did you do ? Score 5 by knocking down 1 and 4 2 and 3**

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**2 1 4 8 Pick a Pair Pick a pair of numbers. Add them together.**

Write the numbers and the answer. Keep doing this. How many different answers can you get ?

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**How many did you find ? 2 + 4 = 6 1 + 2 = 3 1 + 4 = 5 1 + 8 = 9**

4 + 8 = 12 2 + 8 = 10

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**2 4 8 3 Sum Up Make these totals. You can only use each number once.**

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**Did you get them all ? 9 = 12 = 10 = 13 = 11 = 14 = 15 = 2 + 3 + 4**

9 = = 10 = = 11 = = 15 = 4 + 8 2 + 8 3 + 8

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**Birds’ Eggs Three birds laid some eggs.**

Each bird laid an odd number of eggs. Altogether they laid 19 eggs. How many eggs did each bird lay ? You may need 19 counters

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How many did you get ? 1 17 1 3 3 13 3 5 11 1 15 3 3 7 9 1 13 5 5 5 9 1 7 11 1 9 9 5 7 7

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**Fireworks « « « « « « « « « « Emma had some fireworks.**

Some made 4 stars. Some made 3 stars. Altogether her fireworks made 19 stars. How many made 3 stars ? Find 2 different answers.

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**How did you do ? 5 fireworks made 3 stars and 1 made 4 stars.**

1 firework made 3 stars and 4 made 4 stars.

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**Birthdays Mum and Paul are talking about birthdays.**

They take Paul’s age and double it. Then they add 5. The answer is 35. Mum says this is her age. How old is Paul ?

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**double halve add subtract**

Paul is ………………… 15 Make up some more problems like this. Try to use some of these words: double halve add subtract

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