tens and ones

28 is:

• 8 tens and 2 ones
• 2 tens and 8 ones
• 4 tens and 6 ones
• 3 tens and 2 ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

79, ______, _______, 82

• 80, 81
• 79, 80
• 50, 52
• 69, 70

Tags

CCSS.1.NBT.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

• 2 groups of 10 and 6 leftover
• 3 groups of ten and 6 leftover
• 3 groups of ten and 3 leftover
• 1 group of 10 and 4 leftover

Tags

CCSS.2.OA.C.3

• 6
• 43
• 36
• 33

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What are numerals?

• Numbers
• Names
• To know how many there are
• Bundles

Why do we count?

• to be smarter
• to know how many there are
• because it is fun
• to know numbers

How are 20 and 2 different?

• They are different numbers.
• Because they are.
• 20 has 2 groups of ten and 2 has 2 ones.
• They are the same.

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

-

• 42
• 24
• 36
• 11

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

• 3 tens and 2 leftover
• 1 ten and 9 leftover
• 3 tens and 3 leftover
• 2 tens and 3 leftover

Tags

CCSS.2.NBT.B.6