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๐ŸŽ“ Grades 5-7๐Ÿ“„ Free PDFโœ… Answer Keysโ™พ๏ธ Unlimited Generator

Adding DecimalsFREEWorksheet Generator(Grades 5-7)

Free printable decimal addition worksheets with complete step-by-step column alignment answer keys. Practice adding tenths, hundredths, and mixed place values with regrouping for Grades 5โ€“7.

๐Ÿ“Aligned to Common Core State Standards (CCSS)ยท15-20 min per sheet
๐ŸŽฏ Decimal Operations Worksheets:Switch to Fraction Operations Worksheets โž”
Adding DecimalsLine UpSubtracting DecimalsMultiplying DecimalsDividing Decimals
Format:
Count:
๐Ÿ“„ Sheet #1โ€ข10 Problems
PanMaths.comAdding Decimals Worksheets (Tenths, Hundredths & Column Regrouping) โ€ข Worksheet #1
Name: __________________________
Date: _____________ Period: ____
Score: _____ / 10
1
33.24
+38.34
ย 
2
19.60
+12.50
ย 
3
7.03
+14.13
ย 
4
19.11
+18.72
ย 
5
46.47
+39.96
ย 
6
3.06
+13.65
ย 
7
30.30
+30.82
ย 
8
17.98
+13.75
ย 
9
33.86
+44.36
ย 
10
17.11
+44.19
ย 
PanMaths.com โ€ข Free Math Worksheet GeneratorPage 1 of 2
PanMaths.comAnswer Key & Worked Solutions โ€ข Worksheet #1
Answer Key
Total Problems: 10
1
33.24
+38.34
71.58
1. Align Decimal Points: Line up columns by decimal point (33.24 + 38.34)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 33.24 + 38.34 = 71.58 โœ…
2
19.60
+12.50
32.10
1. Align Decimal Points: Line up columns by decimal point (19.60 + 12.50)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 19.60 + 12.50 = 32.10 โœ…
3
7.03
+14.13
21.16
1. Align Decimal Points: Line up columns by decimal point (7.03 + 14.13)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 7.03 + 14.13 = 21.16 โœ…
4
19.11
+18.72
37.83
1. Align Decimal Points: Line up columns by decimal point (19.11 + 18.72)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 19.11 + 18.72 = 37.83 โœ…
5
46.47
+39.96
86.43
1. Align Decimal Points: Line up columns by decimal point (46.47 + 39.96)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 46.47 + 39.96 = 86.43 โœ…
6
3.06
+13.65
16.71
1. Align Decimal Points: Line up columns by decimal point (3.06 + 13.65)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 3.06 + 13.65 = 16.71 โœ…
7
30.30
+30.82
61.12
1. Align Decimal Points: Line up columns by decimal point (30.30 + 30.82)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 30.30 + 30.82 = 61.12 โœ…
8
17.98
+13.75
31.73
1. Align Decimal Points: Line up columns by decimal point (17.98 + 13.75)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 17.98 + 13.75 = 31.73 โœ…
9
33.86
+44.36
78.22
1. Align Decimal Points: Line up columns by decimal point (33.86 + 44.36)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 33.86 + 44.36 = 78.22 โœ…
10
17.11
+44.19
61.30
1. Align Decimal Points: Line up columns by decimal point (17.11 + 44.19)
2. Add Place Values from Right to Left with Carrying
3. Bring down the decimal point: 17.11 + 44.19 = 61.30 โœ…
PanMaths.com โ€ข Answer Key & Worked SolutionsPage 2 of 2
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Need a Multi-Topic Review Test or Custom Problem Mix?Combine Adding Decimals Worksheets (Tenths, Hundredths & Column Regrouping) with other math skills into a custom 15-to-25 question test with 1-click dual-set anti-cheat PDFs & answer keys.
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Worksheet Info

Categoryarithmetic
Grade LevelGrades 5-7
DifficultyTenths (1.5 + 2.8) to Hundredths & Ragged (14.25 + 3.8)
Time15-20 min

Skills Practiced

  • โœ“ Aligning decimal points strictly by column place value
  • โœ“ Padding ragged addends with trailing placeholder zeros
  • โœ“ Regrouping (carrying) from tenths into units and tens
  • โœ“ Translating decimal addition to real-world currency ($) and metric measurements
๐ŸŽฎ Interactive Warm-Up

Addition Mastery

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Related Worksheets

Mastering Adding Decimals: Core Concepts & Mental Models

Free printable decimal addition worksheets with complete step-by-step column alignment answer keys. Practice adding tenths, hundredths, and mixed place values with regrouping for Grades 5โ€“7.

โš ๏ธ Common Mistakes & Teacher Fixes

โš ๏ธAligning numbers by rightmost digits instead of by decimal points (e.g., writing 3.5 under 1.25 as 1.25 + 0.35).

Why students stumble: Decimal place values are determined relative to the decimal point (tenths, hundredths), not relative to the end of the written numeral.

Teacher Fix:
โš ๏ธForgetting to drop the decimal point straight down into the answer (writing 4.2 + 3.1 = 73).

Why students stumble: Omitting the decimal changes the scale by an order of magnitude (73 instead of 7.3).

Teacher Fix:
โš ๏ธTreating decimals like whole numbers and adding digits across different place values (e.g., 0.5 + 0.05 = 0.10).

Why students stumble: 0.5 represents 5 tenths (50 hundredths), while 0.05 represents 5 hundredths. Adding unlike units without common denominator scaling is invalid.

Teacher Fix:

โ“ Frequently Asked Questions

What is the core learning objective for adding decimals?

Free printable decimal addition worksheets with complete step-by-step column alignment answer keys. Practice adding tenths, hundredths, and mixed place values with regrouping for Grades 5โ€“7.

What is the most common mistake students make with adding decimals?

A frequent pitfall is: "Aligning numbers by rightmost digits instead of by decimal points (e.g., writing 3.5 under 1.25 as 1.25 + 0.35).". Why students stumble: Decimal place values are determined relative to the decimal point (tenths, hundredths), not relative to the end of the written numeral. How to fix it: undefined

How does the unlimited adding decimals worksheet generator work?

Every click of 'Generate New Worksheet' creates a completely fresh set of adding decimals problems with unique numbers. No two worksheets are ever the same โ€” perfect for daily practice, homework variety, and preventing student copying. You can also customize the problem count (6, 8, 10, 12, 15, or 20 problems per sheet).

Are these adding decimals worksheets free to print with answer keys?

Yes! Every single worksheet on PanMaths is 100% free with no sign-up needed. Each sheet includes a dedicated Answer Key on Page 2 with step-by-step intermediate evaluation lines for 1-minute grading.