Unit Five- Addition and Subtraction (February)
In this unit, children will review addition and subtraction problems in the context of money and number stories. They learn strategies for mentally adding and subtracting 10 and 100. You will see different diagrams like part, part, total and Start-Change-End to help them solve number stories. Students are expected to use a question mark in the number model, and the diagram to show their thinking while solving the problem. Lastly, they will be learning how to use an open number line to add and subtract bigger numbers.
Practice counting coin combinations at home and connect that to adding. For example, if there is a Q Q D N P P P, the number model would be 25 + 25 + 10 + 5 + 1 + 1+ 1= 68 cents. You can have your child pretend to buy things in your house and tell them a price that it costs (stay below $1.00). Your child can give you the exact amount of money they would use to pay for that item.
Continue to practice addition and subtraction facts to become more fluent fact solvers. Remind your child of the counting up strategies and counting back strategies when solving those facts.