Fruit
Add and Subtract Decimals
Grapefruits 5.2 pounds Oranges 3.4 pounds Lemons 2.5 pounds
Grapefruits 5.2 pounds Oranges 3.4 pounds Lemons 2.5 pounds
Apples Cherries Grapes
Apples 5.10 pounds Cherries 2.8 pounds Grapes 2.12 pounds
I am buying fruit for the week for my family. Below are the weights from the previous slides. About how many pounds of fruit am I buying this week?
Grapefruits | 5.2 pounds | Oranges | 3.4 pounds |
Lemons | 2.5 pounds | Apples | 5.10 pounds |
Cherries | 2.8 pounds | Grapes | 2.12 pounds |
Estimate
Turn and talk:
Estimate how many pounds of fruit I am buying this week.
I am buying fruit for the week for my family. Below are the weights from the previous slides. About how many pounds of fruit am I buying this week?
Grapefruits | 5.2 pounds | Oranges | 3.4 pounds |
Lemons | 2.5 pounds | Apples | 5.10 pounds |
Cherries | 2.8 pounds | Grapes | 2.12 pounds |
Estimate
What was your estimate? What estimation strategy did you use?
I am buying fruit for the week for my family. Below are the weights from the previous slides. How many pounds of fruit am I buying this week? Am I buying more or less than 30 pounds of fruit? How much more or less?
Grapefruits | 5.2 pounds | Oranges | 3.4 pounds |
Lemons | 2.5 pounds | Apples | 5.10 pounds |
Cherries | 2.8 pounds | Grapes | 2.12 pounds |
Solve
I am buying fruit for the week for my family. Below are the weights from the previous slides. How many pounds of fruit am I buying this week? Am I buying more or less than 30 pounds of fruit? How much more or less?
Grapefruits | 5.2 pounds | Oranges | 3.4 pounds |
Lemons | 2.5 pounds | Apples | 5.10 pounds |
Cherries | 2.8 pounds | Grapes | 2.12 pounds |
Debrief
Partner up:
Share how you solved the problem. How are your strategies similar? How are they different?
I am buying fruit for the week for my family. Below are the weights from the previous slides. How many pounds of fruit am I buying this week? Am I buying more or less than 30 pounds of fruit? How much more or less?
Grapefruits | 5.2 pounds | Oranges | 3.4 pounds |
Lemons | 2.5 pounds | Apples | 5.10 pounds |
Cherries | 2.8 pounds | Grapes | 2.12 pounds |
5.2 + 2.8 = 8 pounds 2.5 + 3.4 = 5.9 pounds
5.10 + 2.12 = 7.22 pounds
9 + 5.9 + 7.22 = 21.12 pounds
29.99 - 21.11 = 8.88 pounds less than 30 pounds
Debrief
Seanβs solution path
Extend the Problem
If I buy the same weight of grapefruits and oranges for four weeks, how many pounds would that be? Would it be more than or less than 50 pounds? How much more or less?
Estimate and solve.
56.24 + 22.7 = ____________
Estimate:
Estimate and solve.
853.92 + 674.09 = ____________
Estimate:
Estimate and solve.
1,234.5 - 852.87 = ____________
Estimate:
Estimate and solve.
7,365.24 - 4,252.66 = ____________
Estimate: