Number Line to 100
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Number Line to 100
Number line to 100 worksheet: count on along eight lines from numbers between 40 and 90, such as 64 to 74, and write the missing numbers in the boxes, across the tens. Grade 1, with an answer key.
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Teach it first
Counting on a Number LineA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Printing
- Black and white
- Related curriculum
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Count forward and back along a number line, by ones and by skip counting in 2s, 5s and 10s, write the number that belongs at a point or in a gap, and add or subtract by jumping forward or back in ones or tens.
Reviewed by Mrs. Jennifer Mitchell, Teacher. How we check worksheets
How to use this sheet
- Have the child put a finger on the start number and hop along the line, counting each jump aloud.
- Before adding or subtracting, ask which way the answer will move: to the right for adding, to the left for taking away.
- For lines that skip count, find what each mark is worth first by looking at two marks with numbers.
Common mistakes
- Counting the start number as the first jump, so 5 + 3 lands on 7. Count the jumps, not the marks.
- Going the wrong way to subtract. Write a small arrow at each end of the line: bigger numbers to the right.
- Assuming every mark is worth 1 when the line counts by 2s, 5s or 10s. Check two marks with numbers first.
