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Other Ways to Solve:
1.1 10 = 2•5
(10)4 = (2•5)4 = 24 • 54
130 • (24•54)
2.1 21 multiplied by 24 = 2(1 + 4) = 25
2.2 51 multiplied by 54 = 5(1 + 4) = 55
(25•55•13)
How did we do?