Curated OER
Add and Subtract to 100
Looking for practice problems to keep your math experts in top shape? Here are 10 problems in both addition and subtraction, all involving only double-digit numbers. Some of these involve borrowing and regrouping, so be sure your kids...
Noyce Foundation
Apple Farm Field Trip
Monitor the growth of young mathematicians with a comprehensive addition and subtraction assessment. Using the context of a class field trip to an apple orchard, this series of four story problems allows children to demonstrate their...
Curated OER
One Hundred Things
Learners practice estimating by handling items in groups of ten. They visualize how much space 100 items, such as pennies, peas, or beans, will take up after holding 10 of them. Young scholars measure the difference in volume between 10...
Curated OER
Subtraction
In this subtraction worksheet set, students find the differences in 480 problems; 24 per page. They subtract two digit numbers from three digit numbers regrouping when necessary.
Curated OER
Add With No Regrouping
In this finding the sums worksheet, students add one digit-numbers plus two-digit numbers with no regrouping. Students solve 30 problems.
Curated OER
"Subtraction Bowling"
Students experience the math concept of subtraction without regrouping. They practice subtraction bowling to work on their basic subtraction skills. Each student demonstrates mastery of the addition and subtraction facts, the meaning of...
Curated OER
Pattern Puzzles
A short video introduces place value in addition and subtraction. As a class, your students identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.