Cogito
Grade 2 Math · Chapter 7 · Lesson 2
Counting Coins of One Kind
Skip count by the coin you are holding.
10 problems · about 11 minutes · 2.MD.C.8, 2.NBT.A.2
What this lesson teaches
The child finds the value of several coins of the same kind by skip counting.
- Skip count by the value of the coin.
- Nickels by 5, dimes by 10, quarters by 25.
- The number of coins is not the amount of money.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsReview — Meet the Coins: How many cents is a dime worth?
Answer 10
Why A dime is 10¢.
Review — Equal Groups in Stories: 4 plates with 3 buns each. How many buns?
Answer 12
Why 3 + 3 + 3 + 3 = 12.
Warm Up
Straightforward practice. Get the method working first.
4 problems5 dimes are worth how many cents?
Answer 50
Why 5 dimes is 50¢.
Is "how many coins" the same as "how much money"?
Answer No. They are different numbers.
Why One coin can be worth many cents.
4 nickels are worth how many cents?
Answer 20
Why 5, 10, 15, 20.
7 dimes are worth how many cents?
Answer 70
Why Skip count by 10.
Build It Up
The same ideas with more to keep track of.
2 problems4 quarters are worth how many cents?
Answer 100
Why 25, 50, 75, 100.
How many coins is 7 dimes?
Answer 7
Why This asks about coins, not cents.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsThe Money Jar: Ana has 6 dimes. How much money does she have?
Answer 60 cents
Why 6 dimes is 60¢.
Counting Quarters: Leo has 3 quarters. How much money is that?
Answer 75 cents
Why 3 quarters is 75¢.