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Կոտորակների բազմապատկումը 1.Բաժինների գումարը գրե՛ք կոտորակի տեսքով 1/5+1/5+1/5+1/5=4/5 2/3+2/3+2/3+2/3+2/3=5x 2/3=10/3 4/3+4/3+4/3+4/3=4×4/3=16/7 7/2+7/2+ 7/2=3×7/2=21/2 2.Կատարե՛ք բազմապատկում 3/7×5/2=3×5/7×2= 15/14 8/3×9/4=8×9/3×4=72/12=36/6=18/4 5/9×7/4=5×7/9×4=35/36 6/7×3/8=6×3/7×8=18/56=9/28 2/9×6/17=2×6/9×17=12/153 4/9 x 15/8=4×15/9×8=60/72=30/36=15/18=5/8 12/17 x 31/27=12×31/17×27=372/459 56/39 x 13/8=56×13/39×8=728/312=364/156=182/78=91/39 25/23 x 69/70=25×69/23×70=1725/1610=345/322 44/37 x 111/11=44×111/37×11=4884/409 54/23 x 25/36=54×25/23×36=1350/828=675/414 3.Կատարե՛ք գործողությունները 81/16 x 8/5 — 3/20 x 11/4 81/16 x 8/5=81×8/16×5=648/80 3/20 x 11/4=3×11/20×4=33/80 648/80-33/80=615/80 … [Read more…]

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It was a nice place with the green trees near a river.  The boys are playing – football in the yard. They spoke much about a modern literature and art. I have an idea of going for a walk as far as the station. Shall we go to London by -train or by – bus. … [Read more…]