Understanding Equal Groups and Multiplying by 10

What is the result when you have two groups of ten?

• 30

• 20

• 10

• 40

How can you write 'four groups of ten equals forty' using a shorter form?

• 4 / 10 = 40

• 4 - 10 = 40

• 4 + 10 = 40

• 4 x 10 = 40

If you have six groups of ten, what is the total?

• 50

• 60

• 70

• 80

What is the total when you count three groups of ten?

• 30

• 20

• 50

• 40

How would you write 'seven groups of ten' in a vertical format?

• 7 + 10

• 7 x 10

• 7 - 10

• 7 / 10