Add Tens Mentally

• 30 + 5
• 3 + 5
• 30 + 50

Tags

CCSS.2.OA.A.1

67=

• 5 tens and 8 ones

• 6 tens and 7 ones

• 7 tens and 6 ones

• 1 ten and 4 ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many tens and ones are the cubes showing?

• 4 tens and 4 ones

• 3 tens and 9 ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many?

• 50

• 45

• 41

• 55

Tags

CCSS.1.NBT.A.1

• 2 Tens 
  5 Ones
• 2 Tens
  0 Ones
• 2 Tens
  3 Ones
• 3 Tens
  2 Ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

• 3 Ten
  3 Ones
• 0 Ten
  5 Ones
• 3 Tens
  5 Ones
• 5 Tens
  3 Ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many tens do you need to make the number 80?

• 20

• 8

• 80

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

How many?

• 11

• 1

• 2

• 22

Tags

CCSS.2.OA.C.4