Maria is having a party for 17 of her friends. She already invited some friends. She has 12 more invitations to send. How many friends has she already invited?

Maria bought 11 red balloons and 8 white balloons. How many balloons did she buy?

Maria had 17 friends at her party. Some of them went outside to see the pinata. There were 4 friends remaining in the room. How many friends went outside?

Type in the missing numbers:

27, 28, _____, _____, _____, 32

Type in the missing number:

_____, 17, _____, 19, _____

Mark says that 34 is the same as 2 tens and 14 ones. Suki says that 34 is the same as 34 ones. Are they correct? Type in YES for yes they are both correct, or type in NO for they are not both correct.

Compare the numbers <, =, >

3 tens _____ 25 ones

Compare the numbers <, =, >

1 ten 14 ones _____ 2 tens 4 ones

Compare the numbers <, =, >

33 _____ 2 tens 12 ones

Compare the numbers <, =, >

26 _____ 1 ten 25 ones

10 more than 29 is________

10 less than 29 is_____

1 more than 29 is _______

1 less than 29 is ______

18 + 3 =

28 + 10 =

40 - 30 =

28 + 2 =

28 + 6 =

28 + 12 =

15 + 15 =

19 + 14 =

16 + 18 =