Year 6 Number Zumba

Yr 6  1.12.17    This week’s target:  I can rapidly recall all PRIME NUMBERS up to 30.

 

TEST DATE 1: 8.12.17                   TEST DATE 2: 14.12.17

 

Bronze: Children to learn PRIME NUMBERS up to 15 (eg. 2,3,5,7,11,13).

Silver: Children to learn PRIME NUMBERS up to 30. (eg. 2,3,5,7,11,13, 17, 19, 23,29).

Gold: Children to learn PRIME NUMBERS up to 50. (eg. 2,3,5,7,11,13, 17, 19, 23,29,31,37,41,43,47).

Platinum: Children to use their knowledge of PRIME NUMBERS to investigate & solve the statement: Both 4 and 8 can be written as the sum of two prime numbers (4=2+2, 8=5+3). How

 

To help your child practise, you could:

  • Write them down in order forwards, backwards & when you get quick at those see if someone can test you in a random order. Also, you could ask them about any number below their target (eg. 15 , 30 or 50) ‘Is it prime?’ giving you 5 seconds to respond correctly.

 

After you’ve looked at the revision tips for all the number types – try the 10 question challenge by clicking the ‘quiz’ icon at the bottom of the page

 

 

This game introduces the term ‘COMPOSITE’ numbers if you successfully complete the first level

 

 

Game number 3 has 3 levels to try.

 

PRIME NUMBERS HUNDRED SQUARE CHALLENGE:

Prime numbers are those numbers (greater than 1) that cannot be divided by any number except themselves and one.

The Greek Eratosthenes created a method to find out these prime numbers, although it only worked over a limited range:

1) Write out the numbers from 1 to 100 in ten rows of 10. (eg. A one hundred square below)

2) Cross off number 1, because all primes are greater than 1.

3) Number 2 is a prime, so we can keep it, but we need to cross off the multiples of 2 (i.e. even numbers).

4) Number 3 is also a prime, so again we keep it and cross off the multiples of 3.

5) The next number left is 5 (because four has been crossed off), so we keep it and cross of the multiples of this number.

6) The final number left in the first row is number 7, so cross off its multiples.

7) You have finished. All of the “surviving” numbers (coloured in white below) on your grid are prime numbers.

8) Do you know the name of the numbers that are coloured in?

Answer:  _ _ _ _ _ _ _ _ _ Numbers