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1-8 Math
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.
Addition and Subtraction
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B.2.
Addition and Subtraction (up to 100)
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Unit Challenge
Addition (sum up to 100)
Overview
Adding two-digit numbers without regrouping
Adding two-digit numbers with regrouping
Adding three 2-digit numbers
Select the correct addition sentence (up to sum 100)
Select the incorrect addition sentence (sum up to 100)
Complete the addition sentence (sum up to 100)
Subtraction (numbers up to 100)
Overview
Subtracting 2-digit numbers without regrouping
Subtracting 2-digit numbers with regrouping
Select the correct subtraction sentence (numbers to 100)
Select the incorrect subtraction sentence (numbers to 100)
Subtraction: Complete the subtraction sentence (numbers to 100)
Subtraction (numbers up to 100) — Subtracting 2-digit numbers with regrouping
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