Summary
Hop on your stationary bike for an extreme spin class, and compute the distances with decimals. You’ll learn how to set up addition and subtraction equations, stacking the decimal points and adding zero as a placeholder. That way, each value has the same number of place values after the decimal. Next, add or subtract just as you would with whole numbers. Then finish by bringing the decimal point straight down. You’ll certainly master the math, but will you survive the workout? Press “play” to find out!
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Ages 7+
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Teaching resources
Discussion questions
A few questions to talk through after watching Adding and Subtracting Decimals:
- What is one new thing you learned about adding and subtracting decimals?
- Can you explain it to a partner in your own words?
- Where might you see this in the real world?
- What is one question you still have?
Quick work-a-long
Try it:
- Write one sentence explaining adding and subtracting decimals.
- Draw or give one example of your own.