Module 2 • Addition and Subtraction and Basic Facts (Review Using Ten and Near Doubles/Halves)
Overview of Module
In this module, students will
- Round numbers to the nearest 10 and 100 and understand how rounding relates to estimation
- Add and subtract 3-digit numbers using tools, diagrams, and number lines with strategies of decomposition and adjusting
- Recognize subtraction as taking away and difference
- Revisit addition and subtraction basic facts
support for this module
The videos linked below can help you and your child with the math content of this module.
Add two-digit numbers using base ten blocks Links to an external site. (Links to an external site.)
Subtract two-digit numbers using base ten blocks Links to an external site. (Links to an external site.)
Add and subtract two-digit numbers using a number line Links to an external site. (Links to an external site.)
Add two-digit numbers using partial sums Links to an external site. (Links to an external site.)
Add two-digit numbers using adjusting Links to an external site. (Links to an external site.)
Add three-digit numbers using base ten blocks Links to an external site. (Links to an external site.)
Subtract three-digit numbers using base ten blocks Links to an external site. (Links to an external site.)
Add and subtract three-digit numbers using a number line Links to an external site.
Rounding to the nearest 10 and 100 Links to an external site.
(Links to an external site.)
You can also visit the HCPSS Family Math Center for more information.
HCPSS Family Math Support Center Links to an external site.
This course content is offered under a CC Attribution Non-Commercial Share Alike Links to an external site. li cense. Content in this course can be considered under this license unless otherwise noted.