Video

Place value blocks (Full video)

Khan Academy

Supporting grades: 4

Description: Lindsay identifies numbers represented by place value blocks. So here we have several sets of place value blocks, some with many many many blocks and some with just single blocks stacked on top of each other, and we want to know what number is represented bay all of the blocks combined. We can zoom in on that a little bit, make it easier for us to count, and these are just single blocks, ones, stacked on top of each other, so we can count them, and we'll see there's one, two, three, four, five, six, seven, eight, nine blocks. Nine blocks right here, then moving over, now we have columns of ones, and each of these columns, here's nine because nine is even with this other nine column plus one more is 10, so each of these columns has 10 blocks, these are tens.

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