F5 To do this activity you should: Know the square numbers Know how to find factors Know how to find multiples Press to start F5

Identify this number: Puzzle 1 It’s a factor of 140 It’s a multiple of 7 It’s not an odd number It’s greater than 16 Its digits add up to ten

It’s one more than a square number Puzzle 2 Identify this number: What age is Mr B? It’s < 30 It’s one more than a square number It’s a multiple of 13

Identify this number: Puzzle 3 It’s a square number? It’s a multiple of 9 It’s an even number Its less than 40

It’s 1 more than one of the square numbers Puzzle 4 Identify this number: It’s a prime number It’s less than 20 It’s an odd number It’s greater than 14 It’s 1 more than one of the square numbers

Identify this number: Puzzle 5 It’s a multiple of 5 Its digits add up to 8 It’s also factor of 70 It’s smaller than 50

Identify this number: Puzzle 6 It’s a square number It’s less than 20 It’s an odd number It’s a factor of 27

Make your own number puzzle: Plenary Make your own number puzzle: Start with a number Have several clues Make a mini-poster

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