Skip to content
Math Lab
Menu
K–12 course
Available practice
SAT practice
Sign in
Admin
grade 1 · WN-018
Subtract groups of ten
Use the value of tens to subtract without counting every one.
← Learning map
Learn together
Try with a hint
Show what I know
Show what I know
Fresh problem · seed 1231957836
Find 40 − 30.
Your answer