Understanding Number Sense and Multiplication

What is the key idea behind multiplying a number by 10?

• Multiplying the number by 100

• Subtracting 10 from the number

• Adding a zero to the end of the number

• Dividing the number by 10

How can the number 23 be broken apart for multiplication?

• Into 10 and 13

• Into 23 and 0

• Into 20 and 3

• Into 2 and 3

When using the grid method, where do you start multiplying?

• In the hundreds column

• In the thousands column

• In the tens column

• In the ones column

What is the result of multiplying 5 by 2 in the grid method?

• 15

• 20

• 10

• 5

How many boxes are needed for a number with three digits in the grid method?

• 4 boxes

• 3 boxes

• 2 boxes

• 1 box

What is the next step after filling the boxes in the grid method?

• Subtracting the numbers

• Dividing the numbers

• Adding the numbers

• Multiplying the numbers again

Why might you need to set up an addition problem in the grid method?

• To find the final answer

• To divide the numbers

• To simplify the multiplication

• To check for errors

What should you do if the numbers are not easy to work with in the grid method?

• Use a calculator

• Multiply by 100

• Guess the answer

• Skip the problem

What is the benefit of using the grid method for multiplication?

• It reduces the number of steps

• It helps develop number sense

• It makes division easier

• It eliminates the need for addition

What is encouraged if you are unsure about your multiplication result?

• To use a calculator

• To skip the question

• To guess the answer

• To ask a friend