Curated OER
Deciding When to Regroup
In this regrouping instructional activity, 2nd graders complete a chart by determining whether 5 subtraction problems need to be regrouped or not and writing the tens and ones on the lines provided for each one. Students study the first...
Math Salamanders Ltd.
Subtracting Ones Sheet 1
In this subtraction worksheet, students complete 30 problems, subtracting a different number of ones from 2-digit numbers. A reference website is provided for additional activities.
Curated OER
Subtracting Greater Numbers
In this subtraction instructional activity, 4th graders subtract 13 math problems involving 4 and 5-digit numbers. Students solve 1 word problem with a chart.