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In this video, Alex and Jada learn to use compatible numbers to simplify complex multiplication.

In this video, Alex learns the number 0 and quantity of "none" using comparative quantities 2 and 3.

In this video, Alex learns how to do subtraction in parts using place values

In this video, Alex learns how to use place values to add 3-digit numbers.

In this video, Alex learns how to estimate a division problem when both numbers are decimals.

In this video, Alex learns how to multiply large multiples of ten using smaller numbers.

In this video, Emily, Alex and Marta learn how to compare different decimal values.

In this video, Alex learns how to add 3-digit numbers uses mental math to add hundreds.

In this video, Alex and Marta learn how to multiply 4-digit numbers and 1-digit numbers using place values.

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