Multiplication looks at equally sized groups. Doubling means multiplying equally sized groups by 2. Can you solve this problem?
Find the value of 2\times8.
Multiplying by two is the same as doubling and can be thought of as the total of two equally sized groups.
4 groups is twice (two times) as many as 2 groups. Let's look at how to multiply numbers by 4 using the Double, Double strategy.
Find the product of 4\times 8.
When multiplying by 2 and 4:
uses mental and informal written strategies for multiplication and division