Fifth graders learn to add and subtract decimals accurately — the key is lining up the decimal points so each place lines up — a skill they’ll use for money and measurement every day.
Students will be able to…
You buy something for $3.40 and something for $2.15 — how much in all? Adding decimals has one golden rule that makes it easy!
Project each item and have students solve. The tool shows the golden rule: line up the decimal points first!
Tap any phase to open the teacher moves and student actions.
$3.40 plus $2.15 — how do we add the decimals?
Teacher models.
Class uses Add or Subtract.
Students compute.
One problem.
Aligned to the Common Core State Standards for Mathematics.
Add, subtract, multiply, and divide decimals to hundredths.
Relate decimal operations to a written method.
Read, write, and compare decimals.
Attend to precision by lining up decimal points.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students solve multi-step money problems — like buying items and finding change — by adding and subtracting decimals. A printable decimals sheet is in the Math library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.