Primary 1 maths · Measurement & time · About 8 minutes
Count cents up to one dollar
Read each coin or note. Add its value.
Start the interactive lesson →Practise: Coin collector
What you will learn
- Count cents up to one dollar
Models used: number sentences, stories, diagrams.
Count the values on the money
A 50-cent coin and a 20-cent coin have different values.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
A 50-cent coin and a 20-cent coin have different values.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Add the values, not the number of coins. We have 70 cents.
50 + 20 = 70 cents
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Add a 20-cent coin and a 10-cent coin. Now the total is 100 cents: one dollar.
100 cents = $1
What did the picture help us see?
Add a 20-cent coin and a 10-cent coin. Now the total is 100 cents: one dollar.
Worked example: A new example, together
Count these coins in cents: 50 + 10 + 5.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Read each coin or note. Add its value.
The value of money is the sum of the printed amounts.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Read the value printed on each note or coin.
Count these coins in cents: 50 + 10 + 5.
65 cents
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Add the values: 50 + 10 + 5.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
The total is 65 cents.
These are model coins. Read the cent value on each coin; counting coins alone will not give their value.
Check the result against the question we started with.
Regrouping the same money keeps the total 65 cents.
We found 65 cents. The value of money is the sum of the printed amounts.
Common mistakes to discuss
- Counting coins instead of values. Each coin carries its own value. Four coins can be 70 cents when they are 50, 10, 5 and 5.
Check your understanding
- Count cents up to one dollar
- count money by its value
- check the answer against the original quantities and units
Explain your reasoning to an adult, then try a fresh question in the interactive lesson. A result from one attempt is not proof of lasting mastery.
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