Grid Decimal Add and Subtract

Does this model represent addition or subtraction?

• addition

• subtraction

The shaded model represents the decimal-

• 1.2

• 1.02

• 12

• 102

Adding Decimals: Use the grid method to add 0.6 and 0.4

• 0.8

• 1.0

• 0.2

• 1.5

When we subtract, we move ____ on the number line.

• Left

• Right

The model above is shaded to represent a number greater than 1.

Which decimal represents this number?

• 3.9

• 39.0

• .39

• 3.09

What is the value of the decimal base ten blocks?

• 5.06

• 5.06

• 0.56

• 56.0

You bought some chips and paid with this amount. How much did the chips cost?

• $1.62

• $0.62

• $2.62

• $2.82

When adding decimals, you must always....

• Ignore the decimal point

• Line up the decimals

• Line up the numbers

• Subtract the numbers

5.9 + 2.3

• 7.12

• 8.2

• 0.82

• 71.2

5.0 + 3.2 

• 5.9

• 6.8

• 10.9

• 8.2