Subtracting from 20

Abigail, Grace, and James are learning subtraction using models. Which model can be used to subtract tens?

• Base-10 blocks

• Clocks

• Rulers

• Thermometers

Which model shows the regrouping of 1 ten to 10 ones when subtracting?

• Number line

• Fraction circles

• Place value chart

• Hundred chart

What happens when you subtract ten from a number?

• The number gets smaller

• The number gets bigger

• The number stays the same

• It depends on the number

If i had 15 pieces of candy and i ate 5 of them How much would i have left

• 8

• 10

• 4

• 0

At Halloween, Anna had 66 pieces of candy. Her little brother ate 20 of them. How many pieces of candy does Anna have left?

• 46 pieces of candy

• 52 pieces of candy

• 40 pieces of candy 

There were 16 birds. 6 flew away , how many were left?

• 14

• 10

• 12

It is finding how many more a number is than another number.

• subtraction

• addition

• multiplication

• division

It is the opposite of addition.

• Multiplication

• Division

• Subtraction

• Addition

In which place value do we always begin subtracting?

• ones

• tens

• hundreds