Printable primary math worksheet for math grades 1 to 6 based on ... - Free Printable
Educational worksheet: Printable primary math worksheet for math grades 1 to 6 based on .... Download and print for classroom or home learning activities.
GIF
600×780
26.8 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #1947857
⭐
Show Answer Key & Explanations
Step-by-step solution for: Printable primary math worksheet for math grades 1 to 6 based on ...
▼
Show Answer Key & Explanations
Step-by-step solution for: Printable primary math worksheet for math grades 1 to 6 based on ...
Let’s go through each number pattern one by one. We’ll find the missing numbers and describe how the pattern works — like adding or subtracting the same amount each time.
---
1. 183, 203, ___, ___, ___, 283, 303
Look at the difference between 183 and 203 → that’s +20.
Check if it continues: 203 + 20 = 223, then 243, then 263, then 283 (yes!), then 303.
So the missing numbers are: 223, 243, 263
Pattern: Add 20 each time
---
2. ___, ___, 277, 287, 297, 307, 317
From 277 to 287 is +10, and it keeps going up by 10.
So before 277: 277 - 10 = 267, then 267 - 10 = 257
Missing numbers: 257, 267
Pattern: Add 10 each time
---
3. 145, 160, ___, ___, ___, 220, 235
145 to 160 is +15.
Then 160 + 15 = 175, 175 + 15 = 190, 190 + 15 = 205, then 205 + 15 = 220 (yes!), then 235.
Missing: 175, 190, 205
Pattern: Add 15 each time
---
4. ___, ___, 307, 332, 357, 382, 407
From 307 to 332 is +25. Check next: 332 + 25 = 357, yes! So pattern is +25.
Before 307: 307 - 25 = 282, then 282 - 25 = 257
Missing: 257, 282
Pattern: Add 25 each time
---
5. 181, 221, ___, ___, ___, 381, 421
181 to 221 is +40.
221 + 40 = 261, 261 + 40 = 301, 301 + 40 = 341, then 341 + 40 = 381 (yes!), then 421.
Missing: 261, 301, 341
Pattern: Add 40 each time
---
6. ___, ___, 280, 295, 310, 325, 340
280 to 295 is +15. Then 295 + 15 = 310, etc. So pattern is +15.
Before 280: 280 - 15 = 265, then 265 - 15 = 250
Missing: 250, 265
Pattern: Add 15 each time
---
7. 222, 242, ___, ___, ___, 322, 342
222 to 242 is +20.
242 + 20 = 262, 262 + 20 = 282, 282 + 20 = 302, then 302 + 20 = 322 (yes!), then 342.
Missing: 262, 282, 302
Pattern: Add 20 each time
---
8. ___, ___, 312, 342, 372, 402, 432
312 to 342 is +30. Then 342 + 30 = 372, yes. Pattern is +30.
Before 312: 312 - 30 = 282, then 282 - 30 = 252
Missing: 252, 282
Pattern: Add 30 each time
---
9. 123, 173, ___, ___, ___, 373, 423
123 to 173 is +50.
173 + 50 = 223, 223 + 50 = 273, 273 + 50 = 323, then 323 + 50 = 373 (yes!), then 423.
Missing: 223, 273, 323
Pattern: Add 50 each time
---
10. ___, ___, 400, 475, 550, 625, 700
400 to 475 is +75. Then 475 + 75 = 550, yes. Pattern is +75.
Before 400: 400 - 75 = 325, then 325 - 75 = 250
Missing: 250, 325
Pattern: Add 75 each time
---
11. 180, 240, ___, ___, ___, 480, 540
180 to 240 is +60.
240 + 60 = 300, 300 + 60 = 360, 360 + 60 = 420, then 420 + 60 = 480 (yes!), then 540.
Missing: 300, 360, 420
Pattern: Add 60 each time
---
12. ___, ___, 265, 320, 375, 430, 485
265 to 320 is +55. Then 320 + 55 = 375, yes. Pattern is +55.
Before 265: 265 - 55 = 210, then 210 - 55 = 155
Missing: 155, 210
Pattern: Add 55 each time
---
Final Answer:
1. Missing: 223, 243, 265 → Pattern: Add 20
2. Missing: 257, 267 → Pattern: Add 10
3. Missing: 175, 190, 205 → Pattern: Add 15
4. Missing: 257, 282 → Pattern: Add 25
5. Missing: 261, 301, 341 → Pattern: Add 40
6. Missing: 250, 265 → Pattern: Add 15
7. Missing: 262, 282, 302 → Pattern: Add 20
8. Missing: 252, 282 → Pattern: Add 30
9. Missing: 223, 273, 323 → Pattern: Add 50
10. Missing: 250, 325 → Pattern: Add 75
11. Missing: 300, 360, 420 → Pattern: Add 60
12. Missing: 155, 210 → Pattern: Add 55
---
1. 183, 203, ___, ___, ___, 283, 303
Look at the difference between 183 and 203 → that’s +20.
Check if it continues: 203 + 20 = 223, then 243, then 263, then 283 (yes!), then 303.
So the missing numbers are: 223, 243, 263
Pattern: Add 20 each time
---
2. ___, ___, 277, 287, 297, 307, 317
From 277 to 287 is +10, and it keeps going up by 10.
So before 277: 277 - 10 = 267, then 267 - 10 = 257
Missing numbers: 257, 267
Pattern: Add 10 each time
---
3. 145, 160, ___, ___, ___, 220, 235
145 to 160 is +15.
Then 160 + 15 = 175, 175 + 15 = 190, 190 + 15 = 205, then 205 + 15 = 220 (yes!), then 235.
Missing: 175, 190, 205
Pattern: Add 15 each time
---
4. ___, ___, 307, 332, 357, 382, 407
From 307 to 332 is +25. Check next: 332 + 25 = 357, yes! So pattern is +25.
Before 307: 307 - 25 = 282, then 282 - 25 = 257
Missing: 257, 282
Pattern: Add 25 each time
---
5. 181, 221, ___, ___, ___, 381, 421
181 to 221 is +40.
221 + 40 = 261, 261 + 40 = 301, 301 + 40 = 341, then 341 + 40 = 381 (yes!), then 421.
Missing: 261, 301, 341
Pattern: Add 40 each time
---
6. ___, ___, 280, 295, 310, 325, 340
280 to 295 is +15. Then 295 + 15 = 310, etc. So pattern is +15.
Before 280: 280 - 15 = 265, then 265 - 15 = 250
Missing: 250, 265
Pattern: Add 15 each time
---
7. 222, 242, ___, ___, ___, 322, 342
222 to 242 is +20.
242 + 20 = 262, 262 + 20 = 282, 282 + 20 = 302, then 302 + 20 = 322 (yes!), then 342.
Missing: 262, 282, 302
Pattern: Add 20 each time
---
8. ___, ___, 312, 342, 372, 402, 432
312 to 342 is +30. Then 342 + 30 = 372, yes. Pattern is +30.
Before 312: 312 - 30 = 282, then 282 - 30 = 252
Missing: 252, 282
Pattern: Add 30 each time
---
9. 123, 173, ___, ___, ___, 373, 423
123 to 173 is +50.
173 + 50 = 223, 223 + 50 = 273, 273 + 50 = 323, then 323 + 50 = 373 (yes!), then 423.
Missing: 223, 273, 323
Pattern: Add 50 each time
---
10. ___, ___, 400, 475, 550, 625, 700
400 to 475 is +75. Then 475 + 75 = 550, yes. Pattern is +75.
Before 400: 400 - 75 = 325, then 325 - 75 = 250
Missing: 250, 325
Pattern: Add 75 each time
---
11. 180, 240, ___, ___, ___, 480, 540
180 to 240 is +60.
240 + 60 = 300, 300 + 60 = 360, 360 + 60 = 420, then 420 + 60 = 480 (yes!), then 540.
Missing: 300, 360, 420
Pattern: Add 60 each time
---
12. ___, ___, 265, 320, 375, 430, 485
265 to 320 is +55. Then 320 + 55 = 375, yes. Pattern is +55.
Before 265: 265 - 55 = 210, then 210 - 55 = 155
Missing: 155, 210
Pattern: Add 55 each time
---
Final Answer:
1. Missing: 223, 243, 265 → Pattern: Add 20
2. Missing: 257, 267 → Pattern: Add 10
3. Missing: 175, 190, 205 → Pattern: Add 15
4. Missing: 257, 282 → Pattern: Add 25
5. Missing: 261, 301, 341 → Pattern: Add 40
6. Missing: 250, 265 → Pattern: Add 15
7. Missing: 262, 282, 302 → Pattern: Add 20
8. Missing: 252, 282 → Pattern: Add 30
9. Missing: 223, 273, 323 → Pattern: Add 50
10. Missing: 250, 325 → Pattern: Add 75
11. Missing: 300, 360, 420 → Pattern: Add 60
12. Missing: 155, 210 → Pattern: Add 55
Parent Tip: Review the logic above to help your child master the concept of free printable math worksheets number patterns.
