kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
2.12 Estimating Decimal Products

Estimate is an amount that is close to another amount but not exact. In the following questions, you are asked to find an approximate value of the product of two decimal numbers.

Method:

  1. Round the two factors to the nearest integers
  2. Perform integer multiplication.

Example:
8.345 x 4.983 = ?
Rounding the factors gives,
8 x 5 = 40
Therefore, a good estimate of the product of the decimal numbers 8.345 and 4.983 is 40. Answer: 40


Directions: Find the products of the following. Also write at least 10 examples of your own.
Q 1: Estimate to check 7.63 x 9.98 = 76.1474
7 x 20 =140
8 x 10 = 80
7 x 9 = 63
cannot be estimated

Q 2: Estimate to check 2.33 x 4 = 9.32
2 x 10 = 20
10 x 10 = 100
2 x 4 = 8
6000

Q 3: Estimate and find the closest answer: 101 x 1.95
100 x 2 = 200
100 x 1.95 = 195
1011.95
101.95

Q 4: Estimate to check 49.3 x 3.8 = 188.48
50 x 10 = 500
50 x 100 = 5000
50 x 4 = 200

Question 5: This question is available to subscribers only!

Question 6: This question is available to subscribers only!


Subscription to kwizNET Learning System offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements
  • Choice of Math, English, Science, & Social Studies Curriculums
  • Excellent value for K-12 and ACT, SAT, & TOEFL Test Preparation
  • Get discount offers by sending an email to discounts@kwiznet.com

Quiz Timer