Page 18 - SK Year 5 Mathematics DLP

PRIME NUMBERS

2 3 4 5 6
1 6 ÷ 1 = 6
2 ÷ 1 = 2 3 ÷ 1 = 3 4 ÷ 1 = 4 5 ÷ 1 = 5 6 ÷ 2 = 3
2 ÷ 2 = 1 3 ÷ 3 = 1 4 ÷ 2 = 2 5 ÷ 5 = 1 6 ÷ 3 = 2
4 ÷ 4 = 1
2 can only 3 can only 5 can only 6 ÷ 6 = 1
be divided be divided 4 can be be divided 6 can be
by 1 and by 1 and divided by by 1 and divided by
itself. itself. 1, 2 and itself. 1, 2, 3 and
itself.
itself.

3
a 2, 3 and 5 are
PRIME NUMBERS 2 5
because these PRIME NUMBERS
numbers can only • must be greater than 1.
• can only be divided by 1
be divided by 1 PRIME and itself.
and by itself. NUMBERS

b
4 and 6 can 4 and 6 can 4 and 6 can 4 and 6
be divided be divided be divided by ARE NOT
by 1. by itself. other numbers. PRIME NUMBERS

Are 7, 8 and 9 prime numbers? Discuss.

2 Prime numbers

from 10 to 20 are I know prime
11, 13, 17 and 19. numbers from
20 to 40.

10 • Discuss how to determine 2-digit prime numbers.
1.2.1
• Surf https://www.youtube.com/watch?v=V08g_lkKj6Q