Lesson 1.ReviewPre-Unit 1 · Review
Start hereWords, worked example, and sentence starters
Learning target I can use everything Pre-Unit 1 taught — estimating with reasoning, fractions of a whole number, decimal operations, volume of a rectangular prism, and pattern rules — and explain which one a problem is asking for.
Start hereWords for this lesson
Read each word before you begin. Say it out loud.
| Word | What it means | Example |
|---|---|---|
| estimateSpanish: estimar | A reasoned answer that is close enough to be useful, worked out instead of counting everything. | Count one handful you CAN count, then ask how many handfuls fill the jar. |
| strategySpanish: estrategia | The plan you choose for solving a problem — draw a model, write an equation, or build a table. | Name what you know, name what you are looking for, then pick the plan. |
| representationSpanish: representación | A picture, table, or diagram that shows the quantities in a problem and how they are related. | Label every part and unit, then read the numbers straight off the picture. |
| argumentSpanish: argumento | A claim backed by mathematics that somebody else can check for themselves. | State the claim, show the calculation, name the units. |
| pattern ruleSpanish: regla del patrón | The rule that connects every input to its output, so you can predict a term you have not reached. | A rule has to work on EVERY row of the table, not just the row you checked. |
| critiqueSpanish: criticar | To examine someone's reasoning and say exactly where it works or where it breaks. | Point at the step that breaks, not at the person. |
Say it and write itSentence starters
Finish each sentence out loud with a partner. Then use them in your writing.
Word bank estimatestrategyrepresentationargumentpattern rulecritique
Watch outA common mistake
The most common Pre-Unit 1 mistake is reporting an estimate as if it were exact. 15 stacks of about 10 coins is about 150 coins — the multiplication is exact, but both numbers going in were estimates, so the answer is too. The second most common is the unit: a volume answer is in cubic units, never square units.
Lesson 1.ReviewPre-Unit 1 · Review
Apply Day · Version ASupported practice
Learning target I can use everything Pre-Unit 1 taught — estimating with reasoning, fractions of a whole number, decimal operations, volume of a rectangular prism, and pattern rules — and explain which one a problem is asking for.
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1Circle the letter of the best answer. Show how you know.
A jar is full of marbles — too many to count one at a time. You count one small handful: about 10 marbles. About 8 handfuls fill the jar. About how many marbles are in the jar?
- AAbout 80 marbles
- BAbout 18 marbles
- CAbout 2 marbles
- DAbout 800 marbles
Hint What can you actually count here — the whole jar, or one handful?
Show your work -
2Circle the letter of the best answer. Show how you know.
Three fourths of the 20 chairs in the room are taken. How many chairs are taken?
- A15 chairs
- B5 chairs
- C23 chairs
- D80 chairs
Hint 'Of' a number, with a fraction in front of it, means multiply.
Show your work -
3Circle the letter of the best answer. Show how you know.
A notebook costs $1.25. You buy 4 notebooks. What is the total cost?
- A$5.00
- B$4.25
- C$5.25
- D$0.31
Hint Are you buying one notebook or four? Four equal prices is four equal groups.
Show your work
Lesson 1.ReviewPre-Unit 1 · Review
Apply Day · Version BCore practice
Learning target I can use everything Pre-Unit 1 taught — estimating with reasoning, fractions of a whole number, decimal operations, volume of a rectangular prism, and pattern rules — and explain which one a problem is asking for.
-
1Circle the letter of the best answer. Show how you know.
Three tickets cost $7.50 altogether. All three tickets cost the same. What does ONE ticket cost?
- A$2.50
- B$4.50
- C$22.50
- D$2.05
Show your work
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2Circle the letter of the best answer. Show how you know.
A Ferris wheel has 20 cars, and about 4 people fit in each car. About how many people can ride at one time?
- AAbout 80 people
- BAbout 24 people
- CAbout 5 people
- DAbout 16 people
Show your work -
3Circle the letter of the best answer. Show how you know.
Two thirds of the 18 students in a group finished early. How many students finished early?
- A12 students
- B6 students
- C27 students
- D9 students
Show your work
Lesson 1.ReviewPre-Unit 1 · Review
Apply Day · ChallengeExtension
Learning target I can use everything Pre-Unit 1 taught — estimating with reasoning, fractions of a whole number, decimal operations, volume of a rectangular prism, and pattern rules — and explain which one a problem is asking for.
-
1Circle the letter of the best answer. Show how you know.
A large cereal box is 8 by 3 by 10 inches and a jumbo box is 10 by 4 by 10 inches. Three large boxes cost the same as two jumbo boxes. Which choice gives MORE cereal, and by how much?
- ATwo jumbo boxes, by 80 cubic inches
- BThree large boxes, by 80 cubic inches
- CThey give exactly the same amount
- DTwo jumbo boxes, by 160 cubic inches
Show your work -
2Circle the letter of the best answer. Show how you know.
A change jar holds pennies, nickels, dimes and quarters worth $53.50 in all. Why does the number of PENNIES have to be a multiple of 5?
- ABecause nickels, dimes and quarters all end in 0 or 5 cents, so only the pennies can make the total end in 0 — and it takes a multiple of 5 pennies to do that
- BBecause $53.50 divided by 5 is a whole number
- CBecause there are 5 pennies in a nickel
- DBecause every jar of coins has a multiple of 5 pennies
Show your work -
3Circle the letter of the best answer. Show how you know.
A recipe needs 0.75 of a 40-ounce bag of flour. How many ounces does the recipe need?
- A30 ounces
- B40.75 ounces
- C53 ounces
- D3 ounces
Show your work