\[\boxed{\mathbf{1.}}\]
\[Обведите\ числа:\]
\[1)\ 400\]
\[2)\ 150\]
\[3)\ 1000\]
\[4)\ 700\]
\[\boxed{\mathbf{2.}}\]
\[(А)\ 26 + 74 = 100\ :5 = 20 \cdot 8 =\]
\[= 160 - 95 = 65\ (Б)\]
\[(А)\ 70 \cdot 2 = 140 - 40 =\]
\[= 100 + 350 = 450\ :9 = 50\ (Т)\]
\[(М)\ 60 \cdot 4 = 240\ :3 =\]
\[= 80 + 20 = 100\ :4 = 25\ (Н)\]
\[65\] | \[26\] | \[50\] | \[60\] | \[70\] | \[25\] |
---|---|---|---|---|---|
\[Б\] | \[А\] | \[Т\] | \[М\] | \[А\] | \[Н\] |
\[\boxed{\mathbf{3.}}\]
\[68 \cdot 7 = 476 < 59 \cdot 9 = 531\]
\[74 \cdot 8 = 592 > 93 \cdot 6 = 558\]
\[230 \cdot 4 = 184 \cdot 5\ (920 = 920)\]
\[190 \cdot 3 = 570 < 308 \cdot 2 = 616\]
\[774\ :2 = 387 > 650\ :2 = 325\]
\[519\ :3 = 865\ :5\ (173 = 173)\]
\[\boxed{\mathbf{4.}}\]
\[913 - 547 + 111 = 477\]
\[455 - 312 - 123 = 20\]