Saxon Course 2: Lesson 29 (Slides)

Lesson 29

• Rounding Whole Numbers

• Rounding Mixed Numbers

​Rounding Whole Numbers

Example 1:
Use a number line to
a. round 283 to the nearest hundred.
b. round 283 to the nearest ten.

​or...

​Rounding Mixed Numbers

​Example 2: Round 14 7/12 to the nearest whole number.

​Rounding can help us estimate the answers to arithmetic problems. Estimating is a quick and easy way to get close to an exact answer. One way to estimate is to round the numbers before calculating.

Estimate 396 x 312

​400 x 300 = 120,000

​Example 3:

​Daily Challenge #29
Answer both A and B:
A. Round 1760 to the nearest hundred.
B. Round 1760 to the nearest hundred.

​Still confused?