Count by 10's
What is 10 more than 12?
22
What number has 2 thousands, 3 hundreds, 5 tens and 7 ones?
2,357
What is 10 less than 69?
59
Mrs. Sundelof's class has 13 boys and Ms. Van Allen's class has 11 boys. If 7 boys leave Ms. Van Allen's class, how many boys are there altogether in both classes?
13+11=24
24-7=17 boys
What is 10 more than 70?
80
What is 555 rounded to the nearest 10?
560
What is 10 less than 60?
50
Ms. Saultz had 15 cookies and Mrs. Sundelof had 23 cookies. How many more cookies did Mrs. Sundelof have than Ms. Saultz?
23-15=8 cookies
What is 10 more than 110?
120
Solve for n:
n+8=20-5
n=7