🚀 The 10-Frame Mental Shift
Mastering regrouping starts with seeing numbers in groups of ten.
12 + 9 = (12+8) + 1 = 21
Regrouping
The art of carrying over and borrowing across place values.
Borrowing
Carrying
Word Problems
Decode the story and find the missing numbers using logic.
Reasoning
Context
Estimation
Check your work fast by rounding to see if your answer makes sense.
Rapid Check
Fact Families
Understanding the deep link between addition and subtraction.
Reversing
Ready to compute?