Summary
Math Antics adds, subtracts, multiplies and divides decimal numbers. A clear, animated 12-minute lesson you can drop straight into a grades 5-6 math block -- pause-friendly, with worked examples on screen.
Viewer safety
All ages
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Teaching resources
Discussion questions
Discussion
A few questions to talk through after watching “Decimal Arithmetic.”
- Why do you line up decimal points when adding and subtracting?
- How do you place the decimal point in a product?
- How is decimal arithmetic like whole-number arithmetic?
Quick work-a-long
Vocabulary: decimal, place value, line up, decimal point, operation.
Try it: Add 2.5 + 1.75 and multiply 0.4 x 0.3.