Place value - Adding 100 and 1000 using place value counters / discs

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In this video we begin by using place value counters / discs as a concrete resource to help children understand how to add 100 and 1000 to any number. We then progress to recording the concrete resources pictorially. We initially look at calculations where only the hundreds or thousands columns are affected. We then progress to looking at what happens when other columns are also affected.
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