Subtracting Decimals and Models

The video tutorial explains how to subtract decimals using models and number lines. It begins with an introduction to decimals, explaining their representation as parts of a whole. The tutorial then demonstrates how to use base 10 blocks to model subtraction, followed by a detailed step-by-step process of subtracting decimals. Additionally, it covers the use of a number line to find differences between decimal numbers. The lesson concludes with a summary of the methods discussed.

What do the numbers after the decimal point represent?

• Whole numbers

• Parts of a whole

• Fractions

• Negative numbers

In base 10 blocks, what does a group of 100 represent?

• One tenth

• One whole

• One hundredth

• One thousandth

How many tenths are there in the number 2.37?

• Thirty-seven

• Seven

• Three

• Two

What is the first step in subtracting 1.29 from 2.37 using base 10 blocks?

• Take away three tenths

• Take away nine hundredths

• Take away two tenths

• Take away one whole

Why do we need to regroup when subtracting 1.29 from 2.37?

• Not enough thousands

• Not enough tenths

• Not enough hundredths

• Not enough wholes

What is the result of subtracting 1.29 from 2.37 using base 10 blocks?

• 1.08

• 1.18

• 1.28

• 1.38

What is the purpose of breaking apart a group of ten in base 10 blocks?

• To create more thousands

• To add more wholes

• To create more tenths

• To create more hundredths

What is the starting point on the number line for subtracting 1.29 from 2.37?

• 2.37

• 1.29

• 1.00

• 0.00

What is the target point on the number line when subtracting 1.29 from 2.37?

• 1.08

• 2.37

• 1.29

• 2.29

How do you find the difference between 2.29 and 2.37 on a number line?

• Subtract 0.08

• Add 0.08

• Subtract 0.10

• Add 0.10