Grade 5 · Math · Lesson 39

Introducing negative numbers: below zero on the number line

Numbers do not stop at zero. Below zero you find a whole new set of numbers called negative numbers. They show things that go below a starting point - cold temperatures, depths underwater, money owed, or floors below the ground floor in a lift.

What this lesson teaches

1Read and write negative whole numbers using the minus sign
2Place negative numbers correctly on a horizontal number line
3Compare and order numbers that include both negatives and positives
4Use negative numbers to describe real situations like temperature and depth

Free · 7 days · No credit card

Unlock the full HSEA system for 7 days.

Create a kid profile, open any lesson, save progress — your family uses HSEA exactly the way a paying family does. Cancel anytime. Nothing to set up, no card required.

✓ All 1,680 lessons, Grades 1–6, every subject
✓ Profiles + saved progress for every kid
✓ Final exams + printable certificates

Start your 7-day free trial →

Already convinced? See full membership plans →