Patterns in fives and tens
Today I can spot patterns in the 5 and 10 times tables, and use one to find the other.
A Look back3 min
- 1.
10, 20, 30,
- 2.
2 + 2 + 2 =
- 3.
5 tens and 3 ones make
B Watch me, then you4 min
Ola has 4 bags of 5 apples. Ben has 4 bags of 10 apples. How many apples does each child have?
Ola has 4 rows of 5, which make 20.
Ben's rows hold 10, which is double 5, so his total doubles.
So Ben has 4 rows of 10, which make 40.
- 1.
3 × 5 =
- 2.
So 3 × 10 =
C Your turn5 min
- 1.
2 × 5 =
- 2.
4 × 5 =
- 3.
4 × 10 =
- 4.
6 × 10 =
Say it out loud: How is each 10 answer linked to the 5 answer for the same number? Why does that work?
D Spot the mistake2 min
- 1.
What is 6 × 5?
E Think deeper4 min
- 1.
Write every number from 1 to 50 that is a multiple of 5 but not of 10.