Houghton Mifflin Harcourt
Ten More, Ten Less
Six story problems needing answers await your class. Pictures provide some scaffolding, but consider also using unit cubes and 10-rods to compose and solve equations for each. Some of the problems require a two-step processes to solve. A...
Curated OER
Subtracting 10: Practice 1
In this subtraction activity, students solve a total of 35 problems, subtracting 10 from a variety of numbers. A separate link appears for answer key.
Curated OER
Mentally Add and Subtract 10 or 100
Find the missing digits in these number sequences. Each of the ten has one missing number and scholars must figure out what it is. Here's the pattern: all of these sequences involve counting by 10s. Learners add or subtract 10 to...
Curated OER
Revise Counting Back in Tens (2)
In this counting back instructional activity, 2nd graders study the given numbers and fill in the missing numbers by counting back by tens. Students complete 6 sets.