Multiplying multi digits

What is the purpose of rounding numbers in estimation?

• To make the numbers larger
• To make the numbers easier to multiply
• To make the numbers more accurate
• To make the numbers smaller

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the first step in the standard algorithm for multiplying three-digit numbers?

• Add the carried over number
• Multiply the ones place digits
• Multiply the tens place digits
• Write down the product

Tags

CCSS.4.NBT.B.5

What is the product of 34 and 27?

• 918
• 1,918
• 18,918
• 9,180

Tags

CCSS.4.NBT.B.5

What is the estimated product of 57 and 82?

• 7,800
• 6,800
• 5,700
• 4,800

Tags

CCSS.4.NBT.B.5

What is the value of the digit 7 in the number 725?

• 70
• 7
• 7,000
• 700

Tags

CCSS.4.NBT.A.1

What is the first step in estimating the product of 57 and 82?

• Subtract the rounded numbers
• Multiply the rounded numbers
• Divide the rounded numbers
• Round both numbers to the nearest ten

Tags

CCSS.4.NBT.B.5

What is the product of 72 x 10^3

• 72000
• 7200
• 720
• 72

Tags

CCSS.5.NBT.A.2

What is the product of 389 x 12

• 84024
• 4668
• 2334
• 4400

Tags

CCSS.4.NBT.B.5

What is the estimated product of 205 x 23

• 400
• 7500
• 4000
• 7515

Tags

CCSS.4.NBT.B.5

What is the product of 389 x 12

• 4715
• 7015
• 228
• 5750

Tags

CCSS.4.NBT.B.5