Mastering Addition with Base Ten Materials

What materials can you use if you don't have base 10 materials at home?

• Use a computer

• Use a calculator

• Draw a place value mat and cut out base 10 materials

• Use coins and bills

Tags

CCSS.2.OA.A.1

How many ones are there in the number 45?

• 4

• 5

• 9

• 10

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What is the first step when adding 45 and 7?

• Add the tens place

• Add the ones place

• Subtract the tens place

• Subtract the ones place

Tags

CCSS.2.NBT.B.6

What do you do if you have more than 9 ones?

• Leave them as they are

• Trade 10 ones for 1 ten

• Subtract the extra ones

• Add them to the tens place directly

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What is the result of 45 + 7?

• 52

• 54

• 53

• 55

Tags

CCSS.2.OA.A.1

What is the first number in the new problem introduced after 45 + 7?

• 37

• 27

• 45

• 57

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

How many ones are there in the number 27?

• 2

• 7

• 10

• 9

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

What do you do if you have 14 ones when adding 27 and 37?

• Leave them as they are

• Add them to the tens place directly

• Trade 10 ones for 1 ten

• Subtract the extra ones

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the result of 27 + 37?

• 54

• 63

• 64

• 74

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the new problem given to the students at the end of the video?

• 27 + 37

• 52 + 12

• 69 + 18

• 45 + 7

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5