This is an example blog post for Tui Whanau.
W.A.L.T use place value partitioning to solve addition and subtraction problems.
For the last week my math group, the triangles, have been working on a math strategy called place value partitioning. When using this strategy you have to split each number into their hundreds, tens and ones, and add them together separately.
I enjoy using this strategy as I find it helps me solve problems a lot quicker and I understand the reasoning behind it. Here is an image of how to use place value partitioning.
Have you used place value partitioning before?
Challenge yourself! Have a go at using this strategy for the following problems.
1. Amy had $134 and she was given another $87 for her birthday. How much money does Amy have now?
2. James had 132 sheep in a paddock on Monday. On Tuesday, 45 had gone missing. How many sheep did he have left?
Let me know how you go!
Talofa Tui Whānau,
ReplyDeleteYour maths strategy is different to ours. We add the second number onto the first in case we have to go over the 10s. How do you work it out for number 2? Using your strategy, we would work it out like this:
132-45=
100-0=100
30-40=????
2-5=??
Mā te wā,
Room 1
Kia Ora,
ReplyDeleteWe would work out number two like this:
132 - 45 =
132 - 40 = 92
92 - 5 = 87