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Multiplication & Rounding to One Million

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Multiplication & Rounding to One Million

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Multiply numbers and round to one million.

Created by

Reyaan Singh
Reyaan Singh
United States

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Multiplication & Rounding to One Million
 

Multiplication & Rounding to One MillionOnline version

Multiply numbers and round to one million.

by Reyaan Singh
1

Slide 1: What is rounding to a million?

Rounding to one million means estimating a number to the nearest 1,000,000. We look at the hundred-thousands place to decide whether to go up or down.

2

Slide 2: The rounding rule

To round to the nearest million, if the hundred-thousands digit is 5 or more, round up. Otherwise, round down to the previous million.

3

Slide 3: Example 1

Round 2,345,678 to the nearest million. Since 345,678 is less than 500,000, it rounds to 2,000,000.

4

Slide 4: Example 2

Round 6,745,300 to the nearest million. With 745,300 ≥ 500,000, it rounds to 7,000,000.

5

Slide 5: Why rounding helps

Rounding simplifies large numbers, makes estimates faster, and aids in budgeting, comparing values, and quick calculations in real life.

6

Slide 6: Multiplication basics

When multiplying, you may obtain large results. Rounding after multiplication gives a quick, reasonable approximation close to the exact product.

7

Slide 7: Step-by-step method

Steps: 1) multiply numbers exactly, 2) determine the nearest million, 3) round the product accordingly.

8

Slide 8: Practice problem 1

Compute 3 × 1,050,000. Exact product is 3,150,000, which rounds to 3,000,000.

9

Slide 9: Practice problem 2

Compute 7 × 998,000. Exact product is 6,986,000, which rounds to 6,986,000 rounded to 7,000,000.
 
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