Boris used mental math to make a ten to add 528+133

Question

.

Drag the numbers to complete Boris' work. Numbers may be used once or more than once.

(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
133=2+31+100
528+
=530


+ 31=


561+
Response area =
Response area

So, 528+133=
Response area

Answer 1

133=2+31+100
528+=530

+31=
561+

So, 528+133=
561