Let’s solve each number pattern step by step. We’ll look for the rule — like adding, subtracting, or counting by a certain number — and then fill in the blanks.
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First set: Box patterns (top part)
Row 1:
1, __, __, 4, 5, __, __, 8
→ Looks like counting up by 1s: 1,
2,
3, 4, 5,
6,
7, 8
✔
Row 2:
34, __, __, 37, 38, __, 40, __
→ Counting up by 1s again: 34,
35,
36, 37, 38,
39, 40,
41 ✔
Row 3:
__, 4, 6, __, 10, __, 14, __
→ Starts at 2? Let’s check: 2, 4, 6,
8, 10,
12, 14,
16 → yes, even numbers, +2 each time
✔
Row 4:
5, 10, __, __, 25, __, 35, __
→ Adding 5 each time: 5, 10,
15,
20, 25,
30, 35,
40 ✔
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Second set: Numbered problems (bottom part)
1. 19, 18, __, 16, 15, __, __
→ Subtracting 1 each time: 19, 18,
17, 16, 15,
14,
13
2. 2, 4, __, __, 10, 12, __
→ Adding 2 each time: 2, 4,
6,
8, 10, 12,
14
3. 10, __, 30, __, 50, __, 70
→ Adding 10 each time: 10,
20, 30,
40, 50,
60, 70
4. __, 29, 28, __, 26, __, 24
→ Subtracting 1 each time:
30, 29, 28,
27, 26,
25, 24
5. 88, 89, __, __, __, 93
→ Adding 1 each time: 88, 89,
90,
91,
92, 93
6. 15, __, 25, 30, __, __
→ Adding 5 each time: 15,
20, 25, 30,
35,
40
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✔ All patterns checked and verified.
Final Answer:
Box Rows:
Row 1: 2, 3, 6, 7
Row 2: 35, 36, 39, 41
Row 3: 2, 8, 12, 16
Row 4: 15, 20, 30, 40
Numbered Problems:
1. 17, 14, 13
2. 6, 8, 14
3. 20, 40, 60
4. 30, 27, 25
5. 90, 91, 92
6. 20, 35, 40
Parent Tip: Review the logic above to help your child master the concept of number patterns worksheet 1st grade.
