Mathematics Number Representation & Place Value Conceptual 11–12 yrs

Numbers on a number line

数轴上的数

Description

Understand the absolute value of a rational number as its distance from zero on the number line; interpret absolute value as magnitude in real-world contexts; distinguish absolute value comparisons from ordering statements

Mastery Evidence

✓ Define absolute value as distance from zero on a number line
✓ Calculate the absolute value of positive and negative rational numbers
✓ Distinguish between comparing absolute values and comparing signed numbers in real-world contexts

Assessment Prompt

Can your child tell you that the absolute value of −7 is 7 — because it's 7 steps from zero on a number line regardless of direction — and use this idea to compare distances?

Prerequisites 1

Positive and Negative Numbers

数学 · 11–13y

绝对值的学习需要先理解数轴上的负数

Unlocks 0

No follow-up topics