Subtraction from Multiples of 10 Quiz

What is the main objective of this lesson?

• To multiply single-digit numbers by multiples of 10

• To divide multiples of 10 by single-digit numbers

• To subtract single-digit numbers from multiples of 10 within 100

• To add single-digit numbers to multiples of 10

What does the term 'decompose' mean in this lesson?

• To break a number apart

• To multiply numbers

• To add numbers together

• To divide numbers

How is the number 40 decomposed in the lesson?

• 10 and 30

• 20 and 20

• 30 and 10

• 25 and 15

What is the result of 10 take away 9?

• 2

• 0

• 3

• 1

If you decompose 30 and subtract 9, what is the result?

• 21

• 22

• 19

• 20

Why is it important to learn this subtraction strategy?

• It aids in mental math and future math skills

• It helps with multiplication in higher grades

• It is only useful for this lesson

• It helps with addition in higher grades

What is the result of 40 take away 7 using the decomposition method?

• 30

• 33

• 35

• 37

How does knowing 10 take away 4 help solve 30 take away 4?

• It doesn't help at all

• It helps by providing a base for subtraction

• It makes the problem more complex

• It only helps with addition

In the seesaw activity, what is the result of 90 take away 9?

• 82

• 79

• 81

• 80

Carla has 70 paper clips and gives away 6. How many does she have left?

• 66

• 60

• 64

• 62