{{ dragState.token.type === 'pos' ? '+' : '-' }}
Step {{ Math.min(currentStep, 4) }} of 4

Zero Pairs

A positive and negative cancel each other out to make zero.

drag_indicator Drag to neutralize
{{ t.type === 'pos' ? '+' : '-' }}
check_circle All neutralized!

Adding on a Number Line

+ = {{ step2.start + step2.jump }} ?
linear_scale Slide to add
{{ i-11 }}
Jump: {{ step2.currentJump > 0 ? '+' : '' }}{{ step2.currentJump }}

Adding with Zero Pairs

+ = {{ step3.a + step3.b }} ?
touch_app Tap to cancel pairs
{{ t.type === 'pos' ? '+' : '-' }}
{{ t.type === 'pos' ? '+' : '-' }}
celebration Leftovers = Answer!

Subtracting Integers

Subtracting is the same as adding the opposite!

swap_horiz Convert & Solve
=
{{ step4.userAnswer }}
🏆

Integer Master!

You've mastered adding and subtracting integers.