Addition and Subtraction Strategies Quiz

What is the first step in the algorithmic approach to addition?

• Add the numbers directly.

• Stack the numbers on top of each other.

• Subtract the smaller number from the larger one.

• Multiply the numbers.

In the decomposition strategy, how is the number 54 broken down?

• 50 and 4

• 30 and 24

• 40 and 14

• 60 and -6

What should you do if the digit in the ones place is larger in the number being subtracted?

• Add 10 to the digit in the ones place.

• Borrow 10 from the next higher place value.

• Subtract directly without any changes.

• Multiply the digit by 2.

When using base 10 models for subtraction, what is the first step?

• Multiply the numbers.

• Subtract the second value directly.

• Model the first value with base 10 blocks.

• Add the two numbers.

In the algorithmic subtraction example, what is the result of 54 minus 39?

• 35

• 25

• 15

• 45