Adding and Subtracting Decimals Explained

What is the first step in adding or subtracting decimals?

• Add zeros to the numbers

• Stack the numbers lining up the decimal points

• Subtract the digits from left to right

• Multiply the numbers

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CCSS.6.NS.B.3

In the example 23.1 + 5.8, what is the sum?

• 28.9

• 29.1

• 27.9

• 28.8

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CCSS.5.NBT.B.7

When subtracting 6 - 4.78, what is the first step?

• Add zeros to 4.78

• Line up the decimal points

• Convert to fractions

• Subtract directly

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CCSS.6.NS.B.3

What is the result of 23.5 - 4.216?

• 19.284

• 19.284

• 19.216

• 19.284

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CCSS.6.NS.B.3

If a video clip is 22.36 minutes long and another is 17.03 minutes long, what is the total length?

• 39.33 minutes

• 39.39 minutes

• 39.30 minutes

• 39.36 minutes

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CCSS.6.NS.B.3

Two scooters cost $89.98 and $99.99. What is the price difference?

• $9.00

• $9.01

• $10.00

• $10.01

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CCSS.6.NS.B.3

If Hosea drove 208.62 miles out of a total of 589.4 miles, how much further does he need to travel?

• 380.78 miles

• 380.82 miles

• 380.72 miles

• 380.68 miles

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CCSS.6.NS.B.3

Quinton added 14.52 ounces of peanuts to 27.35 ounces of granola. How many ounces does he have in total?

• 41.83 ounces

• 41.89 ounces

• 41.85 ounces

• 41.87 ounces

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CCSS.6.NS.B.3

Micah spent $305.43 on groceries in two months. If she spent $213.20 in the first month, how much did she spend in the second month?

• $92.23

• $92.20

• $92.25

• $92.30

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CCSS.7.EE.B.3

A hat costs $10.95 and a t-shirt costs $14.20. If you pay with a $50 bill, how much change will you receive?

• $24.75

• $24.90

• $24.80

• $24.85

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CCSS.7.EE.B.3