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Adding DecimalsFREEWorksheet Generator(Grades 5-7)

Adding Decimals worksheets with step-by-step answer keys. Generate unlimited unique practice sheets with fresh problems for Grades 5–7.

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Key in PrintShow Steps

Set A • 10 Qs

PanMaths.comAdding Decimals Worksheets (Tenths, Hundredths & Column Regrouping) • Set A (Medium)

Name: __________________________

Date: _____________ Period: ____

Score: _____ / 10

33.24

+38.34

19.60

+12.50

7.03

+14.13

19.11

+18.72

46.47

+39.96

3.06

+13.65

30.30

+30.82

17.98

+13.75

33.86

+44.36

17.11

+44.19

PanMaths.com • Free Math Worksheet Generator • Set A (Medium)Page 1 of 2

PanMaths.comAnswer Key & Worked Solutions • Set A (Medium)

Answer Key

Total Problems: 10

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

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 ✅

PanMaths.com • Answer Key & Worked SolutionsPage 2 of 2

📚 Subject Libraries:

🍕Fractions Worksheets 📐Geometry Worksheets ⚖️Measurement Worksheets 🧠Algebra Worksheets

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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

✓ Aligning decimal points strictly by column place value
✓ Padding ragged addends with trailing placeholder zeros
✓ Regrouping (carrying) from tenths into units and tens
✓ Translating decimal addition to real-world currency ($) and metric measurements

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Related Worksheets

📄 Subtracting Decimals (Regrouping & Borrowing Across Zeros)View →📄 Multiplying Decimals (Counting Decimal Places & Factors)View →📄 Dividing Decimals (Whole Numbers & Decimal Divisors)View →📄 Order of Operations (PEMDAS / BODMAS)View →📄 Times Tables 1 to 12 Generator with AnswersView →📄 2-Digit by 2-Digit MultiplicationView →

Mastering Adding Decimals: Core Concepts & Mental Models

Adding Decimals worksheets with step-by-step answer keys. Generate unlimited unique practice sheets with fresh problems for Grades 5–7.

⚠️ Common Mistakes & Teacher Fixes

⚠️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:

⚠️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:

⚠️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:

❓ Frequently Asked Questions

What is the core learning objective for adding decimals?

Adding Decimals worksheets with step-by-step answer keys. Generate unlimited unique practice sheets with fresh problems for Grades 5–7.

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 — 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.