Skip to content
Math Lab
Menu
K–12 course
Available practice
SAT practice
Sign in
Admin
grade 1 · WN-009
Add within 20
Use number relationships and make-ten thinking within 20.
← Learning map
Learn together
Try with a hint
Show what I know
Try with a hint
Fresh problem · seed 1169715210
What is 16 + 1?
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Start at 16. Move 1 jumps right.
Give me one hint
Start at 16.
Your answer