← Back to Counting to 100

Counting to 100 - Worksheet 9 - 1st Grade

Hard

Count forward and backward to 100 (Hard)

30 problems · 10-15 minutes · Skills: counting, number sequence

About This Worksheet

This hard-level worksheet contains 30 problems designed for 1st Grade students practicing counting to 100. Hard worksheets feature challenging problems including multi-step questions, missing values, and real-world applications to push students further.

Counting to 100 is essential for understanding our number system. It prepares students for addition, subtraction, and place value concepts.

How to Solve: Worked Example

Example Problem: 67, ___, ___, 70
Solution Steps:
  1. Start at 67 and count forward.
  2. 67, 68, 69, 70.
  3. The missing numbers are 68 and 69.
Answer: 68, 69
Tip: Pay special attention to numbers that cross a tens boundary, like 69 to 70.
1
57, ___, ___, 60
2
What numbers come before and after 61? ___, 61, ___
3
What numbers come before and after 92? ___, 92, ___
4
What numbers come before and after 96? ___, 96, ___
5
41, ___, ___, 44
6
91, ___, ___, 94
7
What numbers come before and after 85? ___, 85, ___
8
72, ___, ___, 75
9
What numbers come before and after 57? ___, 57, ___
10
What number comes before 64?
11
65, ___, ___, 68
12
What numbers come before and after 70? ___, 70, ___
13
55, ___, ___, 58
14
What numbers come before and after 37? ___, 37, ___
15
What number comes before 72?
16
What numbers come before and after 42? ___, 42, ___
17
What numbers come before and after 40? ___, 40, ___
18
What numbers come before and after 77? ___, 77, ___
19
What numbers come before and after 64? ___, 64, ___
20
What number comes before 64?
21
What number comes before 84?
22
What numbers come before and after 53? ___, 53, ___
23
What number comes before 91?
24
What numbers come before and after 66? ___, 66, ___
25
What number comes before 53?
26
77, ___, ___, 80
27
90, ___, ___, 93
28
What number comes before 61?
29
What number comes before 82?
30
What number comes before 84?

Answer Key

1. 58, 592. 60, 623. 91, 934. 95, 975. 42, 436. 92, 937. 84, 868. 73, 749. 56, 5810. 6311. 66, 6712. 69, 7113. 56, 5714. 36, 3815. 7116. 41, 4317. 39, 4118. 76, 7819. 63, 6520. 6321. 8322. 52, 5423. 9024. 65, 6725. 5226. 78, 7927. 91, 9228. 6029. 8130. 83

Frequently Asked Questions

How do I download this counting to 100 - worksheet 9 worksheet?

Click the "Download PDF / Print" button at the top of the worksheet. You can save it as a PDF or print it directly. The answer key will be on a separate page.

How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

How many problems are on this worksheet?

This worksheet contains 30 problems. It typically takes 10-15 minutes to complete. An answer key with all solutions is included.