Unit 8 Contents

Adding and Subtracting with Larger Numbers

• 

Shannon wanted to know how many more servings the box of Cheery Chex had than the box of Toasty Oats.

15.25 servings

− 13.10 servings

2.15 servings

• 

Roberto said, “That seems reasonable. 15.25 is a little more than 15, and 13.10 is a little more than 13. The difference should be about 2.”

• 

1. Do you see something wrong with the way the problem below is written? Explain, and then solve the problem.

2. Use a paper and pencil method to solve 0.487 − 0.369.
3. Use the digits 2, 5, and 0. Arrange the decimal points to make an addition problem that results in the sums below. For example, to make a sum of 0.275, the problem is .025 + 0.25.
1. 500
2. 5
3. 0.5
4. 50
5. 0.05
6. 2.75