A teacher shows his students the division problem 63 — 12. Then he demonstrates the following strategy based on skip counting: He writes the sequence 12, 24, 36, 48, 60 and the equation 63 — 60 = 3 on the board. Then he writes 63 – 12 = 5 R3. Study the teacher's approach. Use the same approach to solve each division problem.
a. 74 ÷ 15
b. 145 ÷ 32
c. 94 ÷ 12
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