Adding and Subtracting Decimals Challenge

What is the first step in adding or subtracting decimals?

• Add zeros to the end

• Subtract the smaller number from the larger

• Line up the decimal points

• Carry over the one

When adding 1.410 and 2.678, what is the correct placement of the decimal in the result?

• 4.780

• 47.80

• 478.0

• 4.078

What is the purpose of adding zeros when aligning decimals for addition or subtraction?

• To make the numbers larger

• To hold the place values correctly

• To make subtraction easier

• To increase the decimal places

How do you handle the decimal point when adding or subtracting decimals?

• Move it to the right

• Move it to the left

• Line it up and bring it straight down

• Ignore it

What is the result of adding 26.42 and 1.781?

• 27.201

• 28.101

• 28.201

• 27.301

In subtraction, if you cannot subtract a smaller number from a larger one, what should you do?

• Add 10 to the smaller number

• Subtract from zero

• Borrow from the next digit

• Move the decimal point

What is the result of subtracting 1.21 from 7.41?

• 5.20

• 6.21

• 6.20

• 5.21

What is the result of 76.21 - 34.4?

• 42.71

• 41.71

• 41.81

• 42.81

Jamie's running time on Thursday was 57.23 seconds. If she ran 2.71 seconds faster on Wednesday, what was her time?

• 54.53 seconds

• 59.93 seconds

• 59.94 seconds

• 54.52 seconds

After returning items worth $14.99 and $11.50 with a tax refund of $0.59, how much did Mason spend?

• $46.27

• $49.27

• $48.27

• $47.27