8/9/2023 0 Comments Rod base ten blocksWe will look at a regrouping example to practise regrouping 10 tens as a hundred. It is easier to see that we have 3 more than 10 when we have 1 tens rod and the 3 one cubes left over. Regrouping physical objects can make it easier to count them. Regrouping the ten individual ones as a 10 rod, we have three left over. Remember that 10 individual one cubes can be regrouped as a single ten rod. We can line the blocks up and count until we make ten. We will take some units blocks in the example below and see if we can regroup some as a ten. We can count the number of blocks in each ten rod to see that there are 10. Start with a collection of units (ones) base ten blocks and some tens rods. When starting to teach regrouping it is easiest to begin by regrouping units to tens. If you do not have base ten blocks, you can download and print some along with a base ten place value chart above. This lesson uses base ten blocks to teach regrouping and it might be useful to work along with us using your own base ten blocks. When teaching regrouping numbers it is useful to first show this concept using physical manipulatives, such as place value blocks (sometimes called Base 10 blocks, Dienes blocks or Multibase Arithmetic Blocks). 10 individual hundreds can be regrouped as 1 thousand.
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