Place Value
Enter the number that corresponds to the given place value. Click in the Place Value box to check. Click on the Problem button for a new problem.
Read More →Rounding Whole Numbers
Enter the number rounded to the specified place.
Read More →Number To Words
Click on the Problem Button. Type the number on display in words. Click in the Place Value box for assistance. Click in the check box to check answer.
Read More →Number To Words(2)
Click on the Problem Button. Type the number on display in words. Click in the Place Value box for assistance. Click in the check box to check answer.
Read More →Numbers to Words (hundreds)
Click on the Problem Button for randomly generated numbers. Type your answer in the space provided; hyphens are not necessary.
Read More →Subtraction Bases 2 through 10
Choose a number base and subtract by regrouping. Borrow if necessary. Click in the check box to check your answer.
Read More →Place Value: Addition
The program may lead students to understand the algorithm for addition by comparing the steps to the answer obtained by regrouping.
Read More →Place Value: Subtraction
The program may lead students to understand the algorithm for subtraction by comparing the steps to the answer obtained by regrouping. Borrowing should be insightful.
Read More →Three-digit whole numbers
A visualization of the meaning of the digits in numbers 1 – 999.
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