Students learn that subtracting means taking some away and counting what is left — the partner skill to addition — with a clear picture of every take-away.
Students will be able to…
If you have 7 balloons and 3 pop, how many are left? What does it mean to “subtract”?
Project this and start with some objects, then take some away. Count what is left to find the answer.
Tap any phase to open the teacher moves and student actions.
7 balloons, 3 pop — how many are left?
Teacher models.
Class drives the machine.
Students subtract.
One more.
Aligned to the Common Core State Standards for Mathematics, including the Standards for Mathematical Practice.
Add and subtract within 20; fluently add and subtract within 10.
Use subtraction within 20 to solve word problems.
Understand subtraction as an unknown-addend problem.
Determine the unknown number in an addition or subtraction equation.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students see how 3 + 4 = 7 and 7 − 4 = 3 belong to the same “fact family.” A printable fact-family 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.