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Count, Read and Write 1-100 | Count, Read, and Write Whole Numbers 100 -1,000 | Represent Numbers (1-1,000) in Different Forms | Compare Numbers (1-1,000) | Equivalent Forms of the Same Number | Count and Group objects in Ones and Tens | Summary |
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| Represent Numbers (1-1,000) in Different Forms | ||||||
| CA GR2 NS 1.2 | ||||||
Let’s play with numbers!
Kate has a box full of white building blocks. What would be the easiest way to count them? Put the building blocks in groups of 10.
As you can see there are 5 groups of blocks of 10 and 3 individual blocks. That means we have 53 blocks. Using math language we can say:
John has an other box full of building blocks. Let’s find out how many blocks he has.
After counting you know he has 59 building blocks.
Paula has got some building blocks for her birthday. Let’s find out how many blocks she has got.
After counting you know she has 72 building blocks.
Jeremy bought a box of building blocks. Let’s find out how many blocks he bought.
After counting you know he has 36 building blocks.
Christine ordered a box of building blocks for Christmas. Let’s find out how many blocks she bought.
After counting you know he has 21 building blocks.
Angie got a box of building blocks from her grandma. Let’s find out how many blocks she got.
After counting you know she has 12 building blocks.
Let’s try this with larger numbers! Jim has a large fish tank full of small fish. He wants to count them. He groups them like this:
After counting you know he has 222 fish.
Let’s play with this machine below! We put in 500, 20, 6. Let’s see what comes out of the machine.
The result is 526. Look at the table below.
Let’s write this using math language:
Let’s continue playing with the numbers. We can write numbers different ways. For example we can say 9 hundreds + 3 tens + 3 ones = 933 or 900 + 30 + 3 = 933 or 933 = 9 hundreds + 3 tens + 3 ones or 933 = 900 + 30 + 3
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