Adding and Subtracting Decimals Review

What decimal number is represented by a model with 6 out of 10 blocks shaded?

• 60

• 0.6

• 0.06

• 6

What is the correct way to align decimals when adding or subtracting them?

• No need to align

• Align the decimal points

• Align the rightmost digits

• Align the leftmost digits

When adding 1 and 7 tenths to 1 and 5 tenths, what is the sum?

• 2.2

• 3.12

• 3.2

• 2.12

Why is it important to use placeholders when adding or subtracting decimals?

• To ensure correct alignment

• To make the numbers larger

• To avoid using decimals

• To simplify the problem

What is the result of subtracting 67 hundredths from 1 and 24 hundredths?

• 0.67

• 0.57

• 1.67

• 1.57

How many inches of rain fell over two years if one year had 21 and 65 hundredths inches and the next had 28 and 7 tenths inches?

• 49.35 inches

• 50.75 inches

• 49.75 inches

• 50.35 inches

If Kelvin was 56 and a half inches tall and grew 3 and 75 hundredths inches, how tall is he now?

• 60.25 inches

• 59.75 inches

• 60 inches

• 59.25 inches

What was the total weight of three packages if their weights were 4 and a half pounds, 2 and 75 hundredths pounds, and 3 and 4 tenths pounds?

• 10 pounds

• 10.65 pounds

• 9.65 pounds

• 11 pounds

What was the length of Brandon's prior playlist if his current playlist is 76 and 4 hundredths minutes and was 12 and 57 hundredths minutes longer?

• 63.47 minutes

• 88.61 minutes

• 64.47 minutes

• 63 minutes

After spending $5.25 at an arcade and $4.69 on lunch, how much money does Diego have left if he started with $20?

• $10.06

• $10.94

• $9.06

• $9.94