Number Lines — Answer Key
Part A: Sort the Words
Sort each word or number into the correct category box.
1. Sort these tick values by whether they DO or DO NOT appear on a 0 to 500 number line that jumps by 100.
Appears on the Line
100300500200 Does NOT Appear
250450 A line counting by 100 shows 0, 100, 200, 300, 400, 500; numbers like 250 or 450 sit between ticks, not on them.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. Counting by 100 from 0, the third tick after 0 shows 300.
Each jump adds 100, so tick one is 100, tick two is 200, and tick three is 300.
2. On a 0 to 500 line with jumps of 100, the tick just before 500 is 400.
Moving left by one jump of 100 from 500 lands on 400, the tick right before the end.
3. Starting at 200 and jumping forward by 100, you land on 300.
Each forward jump adds 100, so 200 plus 100 is 300 on the number line.
4. If the line shows 0, 100, 200, 300, 400, and 500, the last tick is 500.
The final tick on a 0 to 500 line with jumps of 100 is 500, the biggest value shown.
5. From 100, two forward jumps of 100 land on 300.
One jump takes 100 to 200, and a second jump takes 200 to 300 on the number line.
Part C: True or False?
Read each statement. Circle True or False.
1. On a 0 to 500 line with jumps of 100, 250 lands exactly on a tick mark.
True False
Only multiples of 100 land on ticks, so 250 sits between 200 and 300, not on a tick.
2. Starting at 0 and making five jumps of 100 lands on 500.
True False
Five jumps of 100 add to 500, so you land exactly on the final tick of a 0 to 500 line.
3. The tick between 200 and 400 on a line that jumps by 100 is 300.
True False
With jumps of 100, the tick between 200 and 400 is 300, one jump past 200 and one before 400.
4. On a line jumping by 100, moving backward from 400 by one jump lands on 500.
True False
Backward jumps subtract, so 400 minus 100 is 300, not 500, which would be a forward jump.