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Several answers are acceptable. If the student includes the reverses of all the combinations, there are eight (1+6, 6+1, 2+5, 5+2, 3+4, 4+3, 7+0, 0+7). If they do not show reverses, then there are four combinations (1+6, 2+5, 3+4, 7+0).
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Children should be able to find several ways to make fourteen using three addends. For example, 4+5+5.
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Some children might say that they saw a pattern of adding three more rooms for each floor. Others may say they added three 14 times. Here are the answers for every floor:
three floors = 9 rooms
four floors = 12 rooms
five floors = 15 rooms
six floors = 18 rooms
seven floors = 21 rooms
eight floors = 24 rooms
nine floors = 27 rooms
ten floors = 30 rooms
11 floors = 33 rooms
12 floors = 36 rooms
13 floors = 39 rooms
14 floors = 42 rooms
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Card Castle Addition | Activity Page | Extra Challenges
Teacher's Guide | Max's Math Adventures
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