Estimating Arithmetic Solutions

What is the main purpose of using rounded numbers in estimations?

• To use more paper

• To get the exact answer

• To confuse the students

• To make calculations faster and easier

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

When rounding 550 to the nearest hundred, what is the result?

• 500

• 600

• 550

• 700

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is 933 rounded to the nearest hundred?

• 900

• 850

• 950

• 1000

What is the estimated sum of 550 and 933 when rounded to the nearest hundred?

• 1700

• 1600

• 1500

• 1400

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

When rounding 36 to the nearest ten, what is the result?

• 50

• 35

• 40

• 30

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is 53 rounded to the nearest ten?

• 45

• 55

• 60

• 50

Tags

CCSS.4.NBT.B.5

What is the estimated product of 36 and 53 when rounded to the nearest ten?

• 2200

• 1500

• 2000

• 1800

Tags

CCSS.4.NBT.B.5

How do you handle zeros when multiplying rounded numbers like 40 and 50?

• Multiply them separately

• Subtract them from the result

• Add them at the end after multiplying the main digits

• Ignore them completely

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is 25 rounded to the nearest ten?

• 20

• 30

• 25

• 35

Tags

CCSS.4.NBT.B.5

What is the estimated product of 25 and 81 when rounded to the nearest ten?

• 2200

• 2400

• 2100

• 2000

Tags

CCSS.4.NBT.B.5