Multiply Multiples 3
Explain your thinking mathematically
Grade 5 J IST |
9 Comments
Fifteen cardsFifteen Cards Stage: 2 I have fifteen cards numbered 1− 15. I put down seven of them on the table in a row. The numbers on the first two cards add to 15. The numbers on the second and third cards add to 20. The numbers on the third and fourth cards add to 23. The numbers on the fourth and fifth cards add to 16. The numbers on the fifth and sixth cards add to 18. The numbers on the sixth and seventh cards add to 21. What are my cards? Can you find any other solutions? How do you know you've found all the different solutions? Leave your answers in the comment section below 1,2,3,4,5,6 Can you order the digits 1,2,3,4,5 and 6 to make a number which is divisible by 6 ... ... so that when the final or last digit is removed it becomes a 5-figure number divisible by 5? And when the final digit is removed again it becomes a 4-figure number divisible by 4? And when the final digit is removed again it becomes a 3-figure number divisible by 3? And when the final digit is removed again it becomes a 2-figure number divisible by 2, then finally a 1-figure number divisible by 1? Hanna's answer... Well done Hanna for explaining your thinking |
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February 2017
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