Mathematics·Addition & Subtraction·representational
Numbers on a number line
Represent whole numbers as lengths on a number line and represent sums and differences within 100 on a number line diagram
Suggested ages 7–8
Learning journey
Your child is advancing their calculation skills — learning to add and subtract larger numbers up to 1000, mastering mental math strategies, and solving more complex word problems.
Evidence of understanding
- Place whole numbers on a number line with equally spaced points
- Show an addition as a jump forward on the number line (e.g. 38 + 27 shown as jumps)
- Show a subtraction as a jump backward on the number line
Assessment prompt
Can Numbers on a number line mark numbers on a number line and show what happens when they add or subtract — for example, jumping forward 35 places from 48?
Standards alignment
2.MD.6US · ccss-math
Represent lengths on a number line
Common Core State Standards for Mathematics · 2