Master number sequences with our Grade 1 worksheet. Students fill in numbers before and after a given value from 10-50. Perfect for building early math fluency and number sense.
ABOUT THE WORKSHEET
Developing a strong foundation in number sequences is a critical milestone for first-grade students. This 'Before and After' worksheet is meticulously designed to help young learners visualize the number line and understand the relationship between consecutive integers. By identifying the predecessor (the number that comes before) and the successor (the number that comes after) for values ranging from 10 to 50, students strengthen their mental math capabilities and numerical fluency.
Mastering these sequences helps transition children from basic counting to more advanced arithmetic concepts, such as addition and subtraction by one. This repetitive practice builds the confidence necessary for tackling larger numbers and more complex mathematical patterns in the future.
QUICK DETAILS
- Grade: Grade 1
- Topic: Counting & Number Sequences
- Question Count: 45 individual problems
- Format: Printable PDF worksheet
STEP-BY-STEP SOLVED EXAMPLES
Here are three examples of how to solve the problems found on this worksheet using basic counting logic:
Example 1: The Number 18
Look at the middle number, 18. To find the number before, count back one step: 17. To find the number after, count forward one step: 19. The complete sequence is 17, 18, 19.
Example 2: The Number 20
When working with tens, students must remember the previous decade. The number that comes before 20 is 19. The number that comes after 20 is 21. The complete sequence is 19, 20, 21.
Example 3: The Number 37
For the number 37, look at the ones place. One less than 7 is 6, making the before number 36. One more than 7 is 8, making the after number 38. The sequence is 36, 37, 38.
TEACHER & PARENT TIPS
- Use a Number Line: For students struggling with the concept, provide a physical number line or a hundreds chart. Let them place a finger on the given number and jump left for 'before' and right for 'after'.
- Oral Warm-ups: Before handing out the worksheet, do a quick round of 'What comes next?' verbally with the class to get their brains in counting mode.
- Highlight Patterns: Encourage students to notice how only the ones digit changes unless the middle number ends in a zero or a nine.
- Time Trials: Once a student is comfortable, use a timer to see how many they can get right in two minutes to build speed and accuracy.