Add and Subtract Decimals Base Ten Models

True or false: The blocks show the decimal numbers of 6.47 + 3.26.

• False

• True

Tags

CCSS.5.NBT.B.7

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

Which decimal represents this number?

• 3.9

• 39.0

• .39

• 3.09

Tags

CCSS.4.NF.C.6

Does this model represent addition or subtraction?

• addition

• subtraction

Tags

CCSS.5.NBT.B.7

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

• 0.8

• 1.0

• 0.2

• 1.5

Tags

CCSS.5.NBT.B.7

-12.4 + 9.2 + 1 

Mathematical Equivalence

ON

Tags

CCSS.7.NS.A.1C

What equation matches this model?

• 0.32 + 0.17 = 0.49

• 0.32 - 0.17 = 0.49

• 0.49 - 0.17 = 0.32

• 0.49 + 0.17 = 0.32

Tags

CCSS.5.NBT.B.7

Which equation matches the model?

• 0.73 - 0.23 = 0.50

• 0.50 + 0.23 = 0.73

• 0.73 + 0.23 = 0.50

• 0.73 - 0.50 = 0.23

Tags

CCSS.5.NBT.B.7

Which problem is represented in the model?

• 0.32 - 0.17

• 0.49 - 0.32

• 0.32 + 0.17

• 0.49 - 0.17

Tags

CCSS.5.NBT.B.7

What equation matches this model?

• 0.7 - 0.44 = 1.14 

• 1.14 - 0.44 = 0.7

• 1.14 + 0.7 = 0.44

• 0.7 + 0.44 = 1.14

Tags

CCSS.5.NBT.B.7

Which problem is represented by this model? BE CAREFUL!

• 0.27 - 0.9

• 0.18 + 0.09

• 0.9 + 0.18

• 0.27 - 0.09

Tags

CCSS.5.NBT.B.7