A challenging worksheet covering complex order of operations with exponents, nested parentheses, and multiple operations using PEMDAS rules
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This is a very common issue! When multiplication and division appear together, they have equal priority and must be solved from left to right, not in the order they appear in PEMDAS. For example, in 24÷4×3, you solve 24÷4=6 first, then 6×3=18, not 4×3=12 then 24÷12=2.
Teach them to work from the 'inside out' like peeling an onion. In expressions like ((5+3)×2)+4, they should solve the innermost parentheses (5+3=8) first, then the next level (8×2=16), and finally add 4. Using different colored pencils for each level helps visualize this process.
Have them write out what the exponent means before calculating. For 2⁴, they should write 2×2×2×2=16 rather than jumping to the answer. This prevents confusion with multiplication (2×4=8) and builds understanding of what exponents actually represent.
At the 6th grade level, it's better to work through these problems by hand to build number sense and ensure they truly understand PEMDAS. However, they can use a calculator to check their final answers after showing all their work step-by-step.
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This often means they're not following the correct order. Have them physically cross out each operation as they complete it, and remind them that multiplication and division come before addition and subtraction, regardless of which appears first in the expression. Practice with simpler problems first, then gradually increase complexity.