Develop: Adding Decimals

Drag and Drop

Match the expanded form with the correct standard form.

1.4 = ​

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1.37 = ​

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1.06 = ​

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Drag these tiles and drop them in the correct blank above

(1x1)+(4x0.1)

(1x1)+(3x0.1)+(7x0.01)

(1x1)+(6x0.01)

Match

Match the following

• add

• subtract

• su

• tenths

• hundredths

To join something, increase a number

To take away something, to decrease a number

the answer to addition problem

one of ten equal parts

one of a hundred equal parts

• To join something, increase a number

• To take away something, to decrease a number

• the answer to addition problem

• one of ten equal parts

• one of a hundred equal parts

Fill in the Blanks

Drag and Drop

Can you express these numbers in another way?



1.2 = ​

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4.22 = ​

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Drag these tiles and drop them in the correct blank above

1 one + 2 tenths

4 ones + 2 tenths + 2 hundredths

Open Ended

Explain how to add decimals.

Multiple Choice

How many ounces of trail mix does Yana make?

• 8.05

• 805

• 80.5

• .805

Multiple Choice

What is the value of the expression 2.23 + 63.05 + 0.6?

• 659

• .659

• 65.9

• 6.59

Multiple Choice

How much money does he spend in all?

• $13.105

• $131.05

• $31.05

• $13,105