Quick Sums Warm-Up (Tier 1)

Grade: 3rd Grade  Time: 15 minutes  Aligned TEKS: 3.5A (addition & subtraction within 1,000)

Objective:
Students will sharpen fluency with addition and subtraction of whole numbers up to 1,000 through a fast-paced drill.

Materials: Quick Sums Warm-Up

Instructions & Pacing

1. No calculators—use place-value strategies or quick jotting.
2. Round 1 (Problems 1–5): 1 minute
3. Round 2 (Problems 6–10): 2 minutes
4. Trade & Self-Check: 3 minutes
5. Class Review & Discussion: 9 minutes

Round 1: Add & Subtract within 200 (1 Minute)

1. 47 + 36 = _______
   
   
   
2. 125 – 78 = _______
   
   
   
3. 63 + 19 = _______
   
   
   
4. 182 – 94 = _______
   
   
   
5. 58 + 27 = _______
   
   
   

Round 2: Add & Subtract within 1,000 (2 Minutes)

6. 245 + 378 = _______
   
   
   
7. 600 – 289 = _______
   
   
   
8. 457 + 523 = _______
   
   
   
9. 721 – 346 = _______
   
   
   
10. 389 + 412 = _______
    
    
    

Trade, Self-Check & Class Review

• Trade & Self-Check (3 minutes): Swap papers, circle errors, correct them.
• Class Review (9 minutes): Discuss strategies, address common errors, and celebrate fluency gains.

Ready, set, go!

Quick Sums Practice

Grade: 3rd Grade  Time: 30 minutes  Aligned TEKS: 3.5A (addition & subtraction within 1,000)

Materials: Quick Sums Practice

Page 1: Numeric Practice

Part A: Column Addition (Solve each. Show your work.)

1. 347 + 528 = _______
   
   
   
2. 619 + 274 = _______
   
   
   
3. 485 + 317 = _______
   
   
   
4. 792 + 109 = _______
   
   
   

Part B: Column Subtraction (Solve each. Show your work.)

5. 803 – 456 = _______
   
   
   
6. 650 – 289 = _______
   
   
   
7. 914 – 578 = _______
   
   
   
8. 730 – 365 = _______
   
   
   

Page 2: Word Problems

Read each problem. Write a number sentence and solve.

9. Sarah has 485 stickers. She gives 267 to her friend. How many stickers does she have left?
   
   
   
   
   
   
   
   
   
   
   

10. A farmer picked 328 apples in the morning and 469 in the afternoon. How many apples did he pick in all?
    
    
    
    
    
    
    
    
    
    
    

11. There are 645 books in the school library. 298 books are checked out. How many books remain in the library?
    
    
    
    
    
    
    
    
    
    
    

12. A toy store sold 412 action figures on Monday and 389 on Tuesday. How many action figures did the store sell in those two days combined?
    
    
    
    
    
    
    
    
    
    
    

Challenge (Optional):

13. Combine what you learned: 754 – 389 + 216 = _______
    
    
    
    
    
    
    
    
    
    
    

Great work! Double-check your answers before turning in.

Quick Sums Practice Answer Key

Grade: 3rd Grade  Aligned TEKS: 3.5A (addition & subtraction within 1,000)

Answer key for Quick Sums Practice. Detailed steps are shown to guide grading and explain reasoning.

Page 1: Numeric Practice

Part A: Column Addition

1. 347 + 528 = 875
   Step-by-step:
   • Ones: 7 + 8 = 15 → write 5, carry 1
   • Tens: 4 + 2 + 1 (carry) = 7
   • Hundreds: 3 + 5 = 8
   → 875

2. 619 + 274 = 893
   • Ones: 9 + 4 = 13 → write 3, carry 1
   • Tens: 1 + 7 + 1 = 9
   • Hundreds: 6 + 2 = 8
   → 893

3. 485 + 317 = 802
   • Ones: 5 + 7 = 12 → write 2, carry 1
   • Tens: 8 + 1 + 1 = 10 → write 0, carry 1
   • Hundreds: 4 + 3 + 1 = 8
   → 802

4. 792 + 109 = 901
   • Ones: 2 + 9 = 11 → write 1, carry 1
   • Tens: 9 + 0 + 1 = 10 → write 0, carry 1
   • Hundreds: 7 + 1 + 1 = 9
   → 901

Part B: Column Subtraction

5. 803 – 456 = 347
   • Borrow from hundreds: 8→7, tens: 0→10; then borrow to ones: tens 10→9, ones: 3→13
   • Ones: 13 – 6 = 7
   • Tens: 9 – 5 = 4
   • Hundreds: 7 – 4 = 3
   → 347

6. 650 – 289 = 361
   • Ones: borrow from tens (5→4, 0→10): 10 – 9 = 1
   • Tens: borrow from hundreds (6→5, 4→14): 14 – 8 = 6
   • Hundreds: 5 – 2 = 3
   → 361

7. 914 – 578 = 336
   • Ones: borrow from tens (1→0, 4→14): 14 – 8 = 6
   • Tens: borrow from hundreds (9→8, 0→10): 10 – 7 = 3
   • Hundreds: 8 – 5 = 3
   → 336

8. 730 – 365 = 365
   • Ones: borrow from tens (3→2, 0→10): 10 – 5 = 5
   • Tens: borrow from hundreds (7→6, 2→12): 12 – 6 = 6
   • Hundreds: 6 – 3 = 3
   → 365

Page 2: Word Problems

For each, write the number sentence, then solve.

9. Sarah has 485 stickers and gives away 267.
   Number sentence: 485 – 267 = ?
   Calculation (borrow as above): 485 – 267 = 218

10. A farmer picked 328 apples in the morning and 469 in the afternoon.
    Number sentence: 328 + 469 = ?
    Calculation: 8 + 9 = 17 (carry 1), 2 + 6 + 1 = 9, 3 + 4 = 7 → 797

11. 645 books in library, 298 checked out.
    Number sentence: 645 – 298 = ?
    Calculation: borrow procedure → 347

12. 412 action figures sold Monday, 389 Tuesday.
    Number sentence: 412 + 389 = ?
    Calculation: 2 + 9 = 11 (carry 1), 1 + 8 + 1 = 10 (carry 1), 4 + 3 + 1 = 8 → 801

Challenge (Optional)

13. Combine: 754 – 389 + 216
    Step 1: 754 – 389 = 365
    Step 2: 365 + 216 = 581
    → 581

Use these solutions to check student work and review any common errors or strategies.