Exploring Decimal Addition with Base Ten Blocks

The video tutorial demonstrates how to add decimals using base 10 blocks. It begins by explaining the representation of decimals with blocks, where a flat equals one whole, a rod equals one tenth, and a cube equals one hundredth. The tutorial then illustrates the process of adding two decimal numbers, 1.35 and 2.87, by first combining the hundredths and exchanging them for tenths, followed by adding the tenths and exchanging them for wholes. The final sum is calculated as 4.22, using the base 10 block method.

What does the flat represent in base 10 blocks?

• One thousandth

• One hundredth

• One whole

• One tenth

Tags

CCSS.5.NBT.A.3A

What is the value of the rod in base 10 blocks?

• One thousandth

• One tenth

• One hundredth

• One whole

Tags

CCSS.5.NBT.A.3A

How is the number 1.35 represented using base 10 blocks?

• 3 flats, 1 rod, and 5 cubes

• 1 flat, 3 cubes, and 5 rods

• 1 flat, 3 rods, and 5 cubes

• 1 flat, 5 rods, and 3 cubes

Tags

CCSS.5.NBT.A.3A

How many tenths are there in the number 2.87?

• 8 tenths

• 7 tenths

• 2 tenths

• 87 tenths

Tags

CCSS.5.NBT.A.3A

What is the first step in adding the numbers 1.35 and 2.87?

• Add the cubes

• Add the hundredths

• Add the tenths

• Add the wholes

Tags

CCSS.5.NBT.B.7

What do you get when you add 7 hundredths and 5 hundredths?

• 1 tenth and 1 hundredth

• 1 whole and 2 hundredths

• 1 tenth and 2 hundredths

• 12 hundredths

Tags

CCSS.5.NBT.B.7

How many tenths can be exchanged for one whole?

• 5 tenths

• 8 tenths

• 12 tenths

• 10 tenths

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

What is the sum of 8 tenths and 3 tenths?

• 10 tenths

• 11 tenths

• 12 tenths

• 9 tenths

Tags

CCSS.5.NBT.B.7

How many wholes are there in the final sum?

• 2 wholes

• 4 wholes

• 3 wholes

• 5 wholes

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the final sum of 1.35 and 2.87?

• 4.12

• 3.22

• 4.22

• 3.12

Tags

CCSS.6.NS.B.3