Let’s solve each number pattern one by one. We’ll look at how the numbers change from left to right and find the rule.
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1.) 10, 15, 20, 25, ___, ___
Look:
10 → 15 (add 5)
15 → 20 (add 5)
20 → 25 (add 5)
So next: 25 + 5 =
30, then 30 + 5 =
35
✔ Missing numbers:
30, 35
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2.) 86, 82, 78, 74, ___, ___
Look:
86 → 82 (subtract 4)
82 → 78 (subtract 4)
78 → 74 (subtract 4)
Next: 74 - 4 =
70, then 70 - 4 =
66
✔ Missing numbers:
70, 66
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3.) 25, 50, 100, 200, ___, ___
Look:
25 × 2 = 50
50 × 2 = 100
100 × 2 = 200
Next: 200 × 2 =
400, then 400 × 2 =
800
✔ Missing numbers:
400, 800
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4.) 80, 90, 100, 110, ___, ___
Look:
80 → 90 (add 10)
90 → 100 (add 10)
100 → 110 (add 10)
Next: 110 + 10 =
120, then 120 + 10 =
130
✔ Missing numbers:
120, 130
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5.) 582, 482, 382, ___, ___
Look:
582 → 482 (subtract 100)
482 → 382 (subtract 100)
Next: 382 - 100 =
282, then 282 - 100 =
182
✔ Missing numbers:
282, 182
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6.) 320, 319, 318, ___, ___
Look:
320 → 319 (subtract 1)
319 → 318 (subtract 1)
Next: 318 - 1 =
317, then 317 - 1 =
316
✔ Missing numbers:
317, 316
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Now let’s match these with the answer boxes provided:
From our work:
- Q1: 30, 35
- Q2: 70, 66
- Q3: 400, 800
- Q4: 120, 130
- Q5: 282, 182
- Q6: 317, 316
All of these are in the answer choices — so we’re good!
Final Answer:
1.) 30, 35
2.) 70, 66
3.) 400, 800
4.) 120, 130
5.) 282, 182
6.) 317, 316
Parent Tip: Review the logic above to help your child master the concept of number patterns worksheet pdf.
