Curated OER
St. Patrick's Day Missing Digits (H)
In this St. Patrick's Day missing digits instructional activity, students solve for the missing digits in twenty-two addition, subtraction and multiplication equations.
Curated OER
Unknown Numbers in Sums and Differences
Beginners to addition and subtraction will have fun with these three word problems, which have accompanying visuals. They complete one problem with a missing difference, one with a missing sum, and a third with a missing subtrahend....
Curated OER
Missing Numbers - Subtraction Worksheet
In this subtraction worksheet set, 1st graders find the differences to 51 online, single digit subtraction problems. They insert the subtrahend in each problem. They print the page if the want to save the data or work on the page at...
Curated OER
Subtraction: Missing Numbers
In this subtraction worksheet, students solve 36 subtraction problems where the subtrahend is missing. Worksheets are 3 pages, 12 problems per page.