Adding and subtracting
First, then, now (addition)
Learn how to use first, then and now stories to understand addition.
First, then, now (subtraction)
Learn how to use first, then and now stories to understand subtraction problems.
Subtraction within 5
Find out how to subtract a one-digit number from another.
Subtraction within 10
Find out how to subtract two numbers under 10.
One more and one less to 100
Find out how to add one or subtract one from numbers to 100
Finding a part using a part-whole model
Learn how to work out a missing part of a part whole model.
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