Add and subtract one- and two-digit numbers, representing problems using...

Quick preparation

• add and subtract one- and two-digit numbers, representing problems using number sentences, and solve using part-part-whole reasoning and a variety of…
• using the associative property of addition to assist with mental calculation by partitioning, rearranging and regrouping numbers using number…
• using strategies such as doubles, near doubles, part-part-whole knowledge to 10, bridging tens and partitioning to mentally solve problems involving…