Cogito
Grade 2 Math · Chapter 6 · Lesson 7
Equal Groups in Stories
Spot the equal groups hiding in a word problem.
10 problems · about 13 minutes · 2.OA.C.4, 2.OA.A.1
Figure — use these to answer the problems
5 + 5 + 5 + 5 = 20
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsFrom “Filling a Rectangle With Squares”
2 rows of 5 squares. How many squares?
AnswerFrom “Writing the Equation”
3 rows of 4. What is the total?
Answer
Warm Up
Straightforward practice. Get the method working first.
3 problems4 plates with 3 buns each. How many buns?
AnswerWhich word tells you the groups are equal?
- "Each".
- "Some".
2 shelves with 5 books each. How many books?
Answer
Build It Up
The same ideas with more to keep track of.
1 problem4 tables with 4 chairs each. How many chairs?
Answer
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
4 problems5 bags with 3 marbles each. How many marbles?
AnswerThe Fruit Bowl
3 bowls each hold 4 apples. How many apples are there?
AnswerapplesThe Garden
A garden has 5 rows with 5 plants in each. How many plants?
AnswerplantsNot Equal
One box has 3 pens and another has 5. Can you use repeated addition?
- No. The groups are not equal.
- Yes. Add 3 twice.