Cogito
Grade 5 Math · Chapter 2 · Lesson 3
A Fraction Is a Division
The leftover has a name after all.
10 problems · about 16 minutes · 5.NF.B.3
Figure — use these to answer the problems
3/4 is less than 1/1.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsFrom “Dividing by Two Digits”
552 ÷ 24 = ?
AnswerFrom “Multiplying Large Numbers”
124 × 12 = ?
Answer
Warm Up
Straightforward practice. Get the method working first.
4 problems5 ÷ 8 as a fraction. What is the top number?
AnswerMust the number being divided be the bigger one?
- No. The answer is just less than 1.
- Yes.
2 ÷ 5 as a fraction. What is the top number?
Answer2 ÷ 5 as a fraction. What is the bottom number?
Answer
Build It Up
The same ideas with more to keep track of.
2 problems11 ÷ 3. How many whole ones?
AnswerCan you divide 4 by 6?
- Yes. The answer is 4/6.
- No.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsThe Ribbon
7 metres of ribbon shared among 8 people. What is the top number of the fraction each gets?
AnswerThe Cakes
9 cakes shared among 4. How many whole cakes does each get?
Answerwhole cakes