Place value tells us the value of each digit in a number. The position of the digit shows if it stands for ones, tens, or hundreds.
The place of a digit decides its value. A “2” in the ones place is just 2, but a “2” in the tens place is 20.
We can show numbers with base-ten blocks. A “cube” stands for 1 one, a “stick” or “long” stands for 1 ten, and a “flat” stands for 1 hundred.
Think of hundreds as “squares,” tens as “sticks,” and ones as “cubes.” This helps us picture numbers more clearly.
Numbers can be written in standard form, expanded form, and word form. Each form shows the value in a different way.
Expanded form shows the value of each digit. Word form helps us read numbers correctly.
We compare numbers by looking at the hundreds, tens, and ones. The place value of each digit tells us which number is greater, less, or equal.
Always compare the largest place first. If those are the same, then compare the next place value.
We can count by tens and ones to build numbers up to 120. Place value helps us keep track as numbers grow larger.
Use tens to count faster, and ones to fill in the small steps between tens.