Making Landmark Numbers with Interactive Examples
Discover the concept of landmark numbers through engaging visuals showcasing numbers designed to be a certain distance away from significant figures. Categories include numbers near landmarks and those close to multiples of ten, offering a fun and educational exploration of numerical patterns.
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Presentation Transcript
Making Landmark or Friendly Numbers
Category 1 Designed to be one away from a landmark or friendly number
19 + 2 19 + 5 19 + 8 19 + 12
9 + 8 19 + 5 9 + 26 16 + 19
7 + 19 16 + 29 19 + 18 29 + 33
39 + 16 28 + 39 59 + 13 23 + 49
25 + 25 25 + 26 24 + 26 26 + 49
49 + 8 49 + 23 49 + 37 49 + 51
46 + 59 44 + 69 58 + 39 76 + 24
37 + 69 79 + 26 89 + 28 99 + 19
99 + 5 99 + 15 99 + 26 99 + 51
Category 2 Consists of one addend that is two away from a multiple of ten or a landmark number
8 + 5 8 + 13 8 + 24 18 + 7
8 + 4 18 + 6 28 + 17 27 + 28
28 + 16 25 + 38 23 + 27 28 + 45
18 + 63 38 + 37 67 + 28 48 + 52
48 + 6 48 + 17 23 + 48 48 + 47
58 + 36 24 + 78 88 + 14 68 + 33
98 + 5 98 + 13 98 + 34 98 + 52
8 + 4 + 18 18 + 4 + 18 28 + 5 + 27 24 + 3 + 48
48 + 4 + 48 48 + 49 + 3 98 + 97 + 5 99 + 98 + 97 + 5
Category 3 Consists of computational problems with two- and three- digit addends. The addends are one or more away from a multiple of ten or landmark number.
99 + 38 98 + 47 98 + 99 99 + 99 + 5
119 + 26 118 + 17 129 + 16 124 + 26
36 + 109 49 + 108 119 + 48 126 + 124
116 + 29 39 + 127 114 + 118 46 + 118
198 + 7 199 + 13 148 + 27 139 + 43
128 + 34 119 + 36 56 + 129 126 + 49
119 + 119 149 + 149 129 + 139 199 + 199
249 + 22 248 + 49 225 + 49 299 + 26
999 + 99 998 + 49 997 + 199 199 + 99 + 49
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