Add Signed Decimals to Hundredths
Written by Adi Ackerman, Head Teacher
"Add Signed Decimals to Hundredths" is written for 7th Grade (Ages 12-13), and it covers Common Core 7.NS.A.1.B. A 6th grader who is already steady on rational numbers can use it too, and an older student can use it as a short review.
7th grade math worksheet: line up decimal points to add signed decimals to hundredths, such as (-63.7) + 13.94, in vertical form. Answer key included. Part of our add and subtract decimals with signs rational numbers collection. Aligned to Common Core standards.
How do I use this worksheet?
Start with Add Signed Decimals to Tenths and Subtract Signed Decimals to Tenths, then move to hundredths. Use Add Three Signed Decimals for longer sums and the comparison sheet as a quick check on sign sense.
What students will practice
- Students will add signed decimals written in vertical form.
- Students will line up the decimal points and write each sum under the bar with its sign.
- Students will add decimals with tenths and hundredths in the same problem.
Curriculum Links
Common Core State Standards
The Number System · 7th Grade
Standard: Understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative. Show that a number and its opposite have a sum of 0 (are additive inverses). Interpret sums of rational numbers by describing real-world contexts.
View all 7.NS.A.1.B worksheets →Find this in the curriculum
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FAQ
How do I use this add and subtract decimals with signs worksheet?
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Start with Add Signed Decimals to Tenths and Subtract Signed Decimals to Tenths, then move to hundredths. Use Add Three Signed Decimals for longer sums and the comparison sheet as a quick check on sign sense.
What does this worksheet teach?
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Line up decimal points to add signed decimals to hundredths, such as (-63.7) + 13.94, in vertical form. The directions on the page read: Add. Write each sum under the bar with its sign. An answer key is included.
Can I use this add and subtract decimals with signs worksheet for homeschool or classroom?
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Yes, both. We made it for 7th grade rational numbers, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
How do you add negative decimals?
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Line up the decimal points, add the digits and keep the sign if both numbers share one. If the signs differ, subtract the smaller absolute value from the greater and keep the sign of the greater. Add Signed Decimals to Tenths practices this.
How do you subtract decimals with negative signs?
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Rewrite the subtraction as adding the opposite, then use the addition rules. Subtract Signed Decimals Using Opposites has students rewrite each problem on a long line first.
Why do decimal points need to be lined up?
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Digits only add correctly when they have the same place value. Add Signed Decimals to Hundredths uses vertical form, and Add Three Signed Decimals has numbers with different numbers of decimal places.
How do you compare two decimal differences?
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Find each difference first, then compare the two values. Choose the Greater Difference of Signed Decimals has students find both differences in a row and circle the greater one.
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Worksheet Details
| Grade | 7th Grade |
| Subject | Math |
| Topic | Rational Numbers |
| Standard | 7.NS.A.1.B |
| Pages | 1 page |
| Difficulty | Medium |
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