Subtracting Decimals

What is the first thing you want to do?

Tags

CCSS.5.NBT.B.7

What is the first step in subtracting decimals like 29.8 and 5.73?

• Align the decimals vertically.

• Start subtracting from the leftmost digit.

• Add zeros to the left of the decimal.

• Multiply both numbers by 10.

Tags

CCSS.5.NBT.B.7

Why do we align the decimals when subtracting decimal numbers?

• To ensure each place value is correctly subtracted.

• Because it looks neater.

• To make the numbers larger.

• To avoid borrowing.

Tags

CCSS.5.NBT.B.7

What should you do if there is a zero in the place where you need to subtract?

• Skip the subtraction for that place.

• Borrow from the next highest place value.

• Change the zero to a nine.

• Just write zero as the result.

Tags

CCSS.2.NBT.B.7

What is a common mistake when subtracting decimals like 29.8 from 5.73?

• Lining up the rightmost digits instead of the decimals.

• Subtracting from right to left.

• Adding instead of subtracting.

• Forgetting to write the decimal in the answer.

Tags

CCSS.5.NBT.B.7

After placing a placeholder zero, what is the next step in decimal subtraction?

• Move the decimal point.

• Rewrite the numbers.

• Subtract the highest place value digits.

• Start subtracting from the rightmost digit.

Tags

CCSS.5.NBT.B.7