Question

The number z and −1.9 are additive inverses.

Drag and drop −1.9 and z to their correct positions on the number line.

Drag and drop the label “Sum” to the sum of −1.9 and z.

Answer 1

Recall that additive inverses add up to 0

if z + (-1.9) = 0, what is z? (add 1.9 to both sides)