Grade 04 Mathematics - EC: M04.A-T.2.1.4
Grade 04 Mathematics - EC: M04.A-T.2.1.4
Continuum of Activities
The list below represents a continuum of activities: resources categorized by Standard/Eligible Content that teachers may use to move students toward proficiency. Using LEA curriculum and available materials and resources, teachers can customize the activity statements/questions for classroom use.
This continuum of activities offers:
- Instructional activities designed to be integrated into planned lessons
- Questions/activities that grow in complexity
- Opportunities for differentiation for each student’s level of performance
Activities
- Estimate the sum of 523 and 389
- Estimate the difference between 975 and 309
- Estimate the product of 19 and 6
- Jason is collecting a set of hockey cards. The entire set has 400 cards in it. He currently has 188 cards, but he just went to the store and bought 52 more. When he got home from the store he was surprised by his mom who had bought 38 more for him. Estimate how many more he needs to get the entire collection. Show your work.
- A group of 3 friends went out to lunch and the total bill was $77.36. They each ordered the lunch special that cost the same amount. They also ordered one appetizer that cost $19 and each shared it. What is a reasonable estimate for the cost of the lunch special that each friend ordered?
- Ben and Kyle work at the same factory packing boxes. Ben packed 32 boxes and each box had 6 items in it. Kyle packed 46 boxes and each box had 3 items in it.
- Estimate how many items each person packed and show your work
- State which person packed more items and about how many more items the person packed and show your work
- A photo copy machine had 4762 sheets of paper in it in the morning. When teachers make copies they have to write it down in a book in the copy room. Mr. Jacobs made 257 copies, Miss Hunter made 381 copies, and Mrs. Smith made 229. After lunch there was 3209 sheets in the machine. There was a teacher named Mr. Peters that wrote down his name but forgot to write how many copies that he made.
- Estimate how many copies that Mr. Peters made and show all your work.
- If one more teacher comes in before the end of the day and makes 483 copies, estimate the total copies made that day
- Estimate how much paper would be left in the machine at the end of the day after the 5 teachers made all their copies.
Answer Key/Rubric
- 500 + 400 = 900
- 1000 – 300 = 700
- 20 x 5 = 100
- Jason needs about 110 more cards to have the entire set of 400 cards.
Student work might include, but is not limited to:
- Estimate: 188 is about 200; 52 is about 50; 38 is about 4
- 400 – 200 = 200
- 200 – 50 = 150
- 150 – 40 = 110
- Each lunch special costs about $20.
Student work might include, but is not limited to:
- Estimate: 77.36 is about 80; 19 is about 20
- 80 – 20 = 60
- 20 + 20 + 20 = 60
- Acceptable responses may include, but are not limited to:
- Ben packed about 180 items and Kyle packed about 150 items.
- Ben: 30 x 6 = 180
- Kyle: 50 x 3 = 150
- Ben packed about 30 more items than Kyle. This was found by subtracting the estimates from part one. 180 – 150 = 30.
- Acceptable answers may include, but are not limited to:
- Mr. Peters made about 1100 copies.
- Estimate each number: 257 is about 300; 381 is about 400; 229 is about 200; 4762 is about 5000; 3209 is about 3000
- Find the known number of copies made: 300 + 400 + 200 = 900
- Find the approximate number of copies used: 5000 – 3000 = 2000
- Find the approximate number of missing copies: 2000 – 900 = 1100
- About 2500 copies were made that day.
- Estimate additional copies: 483 is about 500
- 300 + 400 + 200 + 1100 + 500 = 2500 copies made by five teachers
- At the end of the day there would be about 2500 pieces of paper left in the copy machine.
- 5000 – 2500 = 2500
