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2 13 +13=2\ \frac{1}{3\ }+\frac{1}{3}=2 3 1+31=
2 232\ \frac{2}{3}2 32
2 262\ \frac{2}{6}2 62
333
2 332\ \frac{3}{3}2 33
3 1450+2550=3\ \frac{14}{50}+\frac{25}{50}=3 5014+5025=
3 391003\ \frac{39}{100}3 10039
3 291003\ \frac{29}{100}3 10029
3 39503\ \frac{39}{50}3 5039
4
1 69+89=1\ \frac{6}{9}+\frac{8}{9}=1 96+98=
2 392\ \frac{3}{9}2 93
2 492\ \frac{4}{9}2 94
2 592\ \frac{5}{9}2 95
2 692\ \frac{6}{9}2 96
10 23+53=10\ \frac{2}{3}+\frac{5}{3}=10 32+35=
111111
121212
11 1311\ \frac{1}{3}11 31
12 1312\ \frac{1}{3}12 31
1011− 511=\frac{10}{11}-\ \frac{5}{11}=1110− 115=
611\frac{6}{11}116
511\frac{5}{11}115
411\frac{4}{11}114
311\frac{3}{11}113
2 89− 39=2\ \frac{8}{9}-\ \frac{3}{9}=2 98− 93=
1 591\ \frac{5}{9}1 95
2 502\ \frac{5}{0}2 05
1 501\ \frac{5}{0}1 05
110+ 210=\frac{1}{10}+\ \frac{2}{10}=101+ 102=
310\frac{3}{10}103
444
410\frac{4}{10}104
78− 38=\frac{7}{8}-\ \frac{3}{8}=87− 83=
18\frac{1}{8}81
28\frac{2}{8}82
38\frac{3}{8}83
48\frac{4}{8}84
1123+ 223=\frac{11}{23}+\ \frac{2}{23}=2311+ 232=
1346\frac{13}{46}4613
1323\frac{13}{23}2313
1223\frac{12}{23}2312
1246\frac{12}{46}4612
1215− 715=\frac{12}{15}-\ \frac{7}{15}=1512− 157=
715\frac{7}{15}157
615\frac{6}{15}156
515\frac{5}{15}155
415\frac{4}{15}154
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