Lesson 9- 6th grade 1/15/21

Lesson 9- 6th grade

Adding and Subtracting Multi-Digit Decimals

Adding/Subtracting Decimals

• Sammy, Teddy, and Katie ran a 100-meter race. Sammy's time was 15.03 seconds. Teddy's and Katie's times were 14.7 seconds and 15.003 seconds. Which statements are true? Check all that apply.

Multiple Select

Sammy, Teddy, and Katie ran a 100-meter race. Sammy's time was 15.03 seconds. Teddy's and Katie's times were 14.7 seconds and 15.003 seconds. Which statements are true? Check all that apply.

• Teddy ran 0.04 seconds faster than Katie.

• Teddy came in 3rd place.

• Katie ran 0.027 second faster than Sammy.

• The time between the slowest and fastest run was 0.33 second.

Adding/Subtracting Decimals

• Stacey answered the problem below incorrect. 16.007 - 0.55 = 10.507

• Explain the mistake, then solve for the correct answer.

Questions???

• Remember to line up your decimals before you add or subtract.

• Use zeros, if needed, to help you line up your decimals.