Multi-step Problems 4.OA.A.3 Practice Question Grade 4 Mathematics - Skill Builder + IAR Rehearsal

Grade 4 Mathematics - Skill Builder + IAR Rehearsal Multi-step Problems

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Corey hopes to have 500 rocks in his collection by his next birthday. So far he has two boxes with 75 rocks each, a box with 85 rocks, and two boxes with 65 rocks each. How many more rocks does Corey need to gather to meet his goal?