Grade 1 | MATHEMATICS
STUDENT WORKBOOK • Unit 1
Mathematics only. No Language Arts, Science, History or Scripture assignments appear in this workbook.
MATHEMATICS STUDENT PDF: Download or fill in this grade’s Mathematics-only workbook. The Math lesson and problems on this page remain copyable and printable. Save completed PDF answers privately in your own PDF app. This is Unit 1, not the full annual Math textbook.
Lesson 1: Tens, ones, addition, and subtraction
Learn the Concept
Teacher explanation: Every ten ones can be regrouped into one ten. The number 46 has four tens and six ones. To add 23+14, add tens (20+10) and ones (3+4): 37.
Guided Example
Read the example in the lesson explanation. Use a drawing, number line, manipulatives or written equation to explain each step to a parent or teacher.
Independent Practice: 8 Problems
- Write 34 as tens and ones.
- Write 57 as tens and ones.
- Write 4 tens and 2 ones as a number.
- Calculate 12+5.
- Calculate 18-6.
- Calculate 23+14.
- Calculate 45-12.
- Explain 27+10 using tens and ones.
Check Your Work
Show the steps for at least two problems and explain how you know your answer is reasonable. If you find an error, correct it and try a different example.
Advanced Scholar Extension
When these problems are easy, use the next grade’s mathematics unit or the Advanced Scholars pathway after showing mastery. Do not accelerate solely because of age.
Printable Work and Parent Help
Print or save: The Mathematics questions above can be copied or printed. For an independent, Mathematics-only fillable student workbook, use the PDF download link at the top of this page. The combined edition is archived separately and is not part of this Mathematics book.
Return to Grade 1 subject directory.
TYPE YOUR MATHEMATICS ANSWERS
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Grade 1 Mathematics | Five-Day Core Extension
This adds explicit teaching and independently checkable practice to the original Unit 1. Use one lesson per day, then revisit missed concepts with different numbers. It is a unit, not a complete school-year textbook.
Day 1: Build Tens and Ones
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Ten ones make one ten. The number 34 is three tens and four ones. Use bundled straws or base-ten blocks, then write expanded form 30 + 4.
- 1. Write 62 as tens and ones.
- 2. Expand 47.
- 3. Write 8 tens and 3 ones as a number.
- 4. Which has more tens, 69 or 76?
Show the method with a drawing, counters, place-value blocks, or equations. On the independent check, do not show the answer key.
Day 2: Add Within 100
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Separate tens and ones to add. For 24 + 13, combine 20 + 10 = 30 and 4 + 3 = 7; the total is 37. For 28 + 15, 8 + 5 = 13 ones, which regroup as one ten and three ones, so the total is 43.
- 1. 31 + 26 = ?
- 2. 28 + 15 = ?
- 3. 46 + 17 = ?
- 4. A basket has 25 apples and receives 18 more. Total?
Show the method with a drawing, counters, place-value blocks, or equations. On the independent check, do not show the answer key.
Day 3: Subtract Within 100
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Subtract tens and ones. For 64 – 21, take away 20 and 1 to get 43. When the ones are too small, regroup one ten as ten ones: 52 – 18 becomes 4 tens and 12 ones minus 1 ten and 8 ones, or 34.
- 1. 73 – 32 = ?
- 2. 52 – 18 = ?
- 3. 61 – 27 = ?
- 4. There are 45 stickers; 19 are given away. How many remain?
Show the method with a drawing, counters, place-value blocks, or equations. On the independent check, do not show the answer key.
Day 4: Unknown Numbers and Word Problems
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An equation can contain a missing value. In 16 + __ = 25, nine are missing. Check with 25 – 16 = 9. Make a drawing or number line before deciding whether to add or subtract.
- 1. 18 + __ = 30.
- 2. __ – 7 = 15.
- 3. Nia has 17 shells and gets 9 more. Total?
- 4. Twelve birds sit on a fence; five fly away. How many remain?
Show the method with a drawing, counters, place-value blocks, or equations. On the independent check, do not show the answer key.
Day 5: Independent Check and Explanation
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Read each problem, solve without examples, then explain one solution using a number line, drawing, or place-value model. Record whether regrouping was performed independently.
- 1. Write 58 in expanded form.
- 2. 36 + 27 = ?
- 3. 80 – 46 = ?
- 4. There are 24 pencils; 17 are added and 9 are used. How many remain?
Show the method with a drawing, counters, place-value blocks, or equations. On the independent check, do not show the answer key.
Spiral Review and Extension
At the beginning of each day, revisit two previously learned facts using new examples. After Day 5, write or draw a new story problem using the chapter ideas and explain how to solve it.