Council for Economic Education
Econ Ed Link: One Hen: How One Small Loan Made a Big Difference
The picture book One Hen: How One Small Loan Made a Big Difference, written by Kate Smith Milway, takes place in Africa. Here in a Ghanan village, young Kojo cannot afford to go to school after the death of his father. His resourceful...
Calculator Soup
Calculator Soup: Long Subtraction Calculator With Regrouping
Do long subtraction with regrouping or borrowing. Enter whole numbers or decimal numbers to find the difference. This calculator finds the answer using long subtraction with regrouping and shows the work step by step.
SEN Teacher
Sen Teacher: Arithmetic Maker
Generate multiple addition and subtraction worksheets to print and reproduce for classroom use.
NumberNut
Number Nut: Subtraction: Borrowing
Explains the concept of 'borrowing' in subtraction, also known as regrouping or decomposing numbers.
NumberNut
Number Nut: Subtraction: 3 Digit Numbers
A brief lesson on subtracting from three-digit numbers that includes detailed examples, rules, and further explanation of borrowing.
NumberNut
Number Nut: Subtraction: 1 to 10
Subtraction is about taking things away. Learn how to set up the problem and work with single-digits to 10. Then practice the skills with the two interactive subtraction activities.
Illustrative Mathematics
Illustrative Mathematics: 4.nbt to Regroup or Not to Regroup
Sometimes when we subtract one number from another number we "regroup," and sometimes we don't. For example, if we subtract 38 from 375, we can "regroup" by converting a ten to 10 ones: Aligns with 4.NBT.B.
CK-12 Foundation
Ck 12: Arithmetic: Sums of Mixed Numbers With Renaming
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the difference of mixed numbers by using borrowing and renaming. Students examine guided notes, review guided practice, watch...