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1. Using PEMDAS, solve: 28 ÷ 7 × 13 – 11 (Required.)

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2. Using PEMDAS, solve: 2³ + 19 – 3 × 4 (Required.)

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3. Using PEMDAS, solve: (4+3) × [6−(2+1)] (Required.)

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4. Using PEMDAS, solve: 17 × (48 ÷ 12) + 7² (Required.)

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