4.NBT.4
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Learning Targets
About the Math
Students have had exposure to many ways of adding and subtracting whole numbers. The standard algorithm starts with adding the ones and regrouping as necessary.
Some students may be comfortable starting with the larger place value – this should be permitted if it makes sense to them. A mixture of problems requiring and not requiring regrouping should be given to students. Some students may use an open number line when adding and subtracting and this should be permitted.
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Learning Targets
- I can add multi-digit numbers using the standard algorithm (starting in the ones place, then moving to the tens place, etc)
- I can subtract multi-digit numbers using the standard algorithm (starting in the ones place, then moving to the tens place, etc)
About the Math
Students have had exposure to many ways of adding and subtracting whole numbers. The standard algorithm starts with adding the ones and regrouping as necessary.
Some students may be comfortable starting with the larger place value – this should be permitted if it makes sense to them. A mixture of problems requiring and not requiring regrouping should be given to students. Some students may use an open number line when adding and subtracting and this should be permitted.