Estimate Products Mini-Quiz

Determine whether the product will be an overestimate or an underestimate:

Groups:

(a) Overestimate

,

(b) Underestimate

An estimate that is greater than the actual answer is known as an:

• Partial Product

• Underestimate

• Sum

• Overestimate

Rewite the equation in estimated form (do not solve):

42 X 744

Mathematical Equivalence

OFF

Solve to find the product of the estimated equation: 400 X 80

• 480

• 3,200

• 32,000

• 320,000

An estimate that is less than the actual answer, is known as an ​ (a)   .

• underestimate
• overestimate
• partial product
• lucky guess

Rewite the equation in estimated form (do not solve):

29 X 890

Mathematical Equivalence

OFF

Estimate and then solve: 34 X 599

• 30 X 500 = 15,000

• 40 X 600 = 24,000

• 30 X 600 = 18,000

• 30 X 600 = 1,800

We round DOWN when the number we look at is either ​ (a)   ​ (b)   ​ (c)   or ​ (d)   .

• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9

We round UP when the number we look at is either ​ (a)   ​ (b)   ​ (c)   ​ (d)   or ​ (e)   .

• 5
• 6
• 7
• 8
• 9
• 1
• 2
• 3
• 4

A product in math is known as:

• The answer to an addition equation.

• The answer to a subtraction equation.

• The answer to a division equation.

• The answer to a multiplication equation.