# Wishball: whole numbers

Learning Material

Description
Test your understanding of decimal place value. Start with a whole number such as 1374 that includes four digits. Spin a random digit, then choose its decimal place value. Decide whether to add or subtract the random digit from your target number. The starting number will be adjusted by the amount you choose. Work towards a given target number such as 3278. You can use a ‘Wishball’ to help you reach the target number. Try to achieve the target with as few additions or subtractions as possible. This learning object is one in a series of ten objects.
Objective
1. Students identify the place value of each digit in a four-digit whole number and the relative value of a given digit in different places within a four-digit whole number.
2. Students add and subtract ones, tens, hundreds and thousands.
3. Students read and interpret various representational forms.

#### Curriculum Information

 Education Type K to 12 Grade Level Grade 4, Grade 3 Learning Area Mathematics Content/Topic Numbers and Number Sense Intended Users Educators, Learners, Students Competencies