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This project was created with Explain Everything™ Interactive Whiteboard for iPad.
mathcast for first-graders by Laura Ellsworth our vocabulary words for this lesson are place value ones tens and hundreds place value is the value a digit has because of its place in a number the name of the position a digit has in a number such as ones or tens ones is the number zero to nine also referred to as the ones place tens is the numbers 10 to 99 also referred to as the tens place hundreds is the numbers between 100 and 999 also referred to as the hundreds place in this picture there are 1 2 3 4 5 6 7 8 9 10 bundles of 10 sticks and they are 1 2 3 4 5 6 7 8 9 individual sticks therefore you put a 10 in the tens box and a 9 in the ones box you add them all together and you have a hundred and nine sticks in this picture we see that there is 1 2 3 4 5 6 7 8 9 10 11 bags of cookies and 1 2 3 4 5 6 individual cookies therefore you put 11 in the tens box and six in the ones box which means you have 116 cookies all together in this picture you see that there's one two three four five six seven eight nine 10 11 12 bundles of sticks therefore you put 12 in the tens box and zero in the hunt in the ones box because there are zero individual sticks and you add that all together and have a hundred and twenty sticks thanks for watching

Whiteboard 1

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