\[\boxed{\text{1.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[450 - 30 \cdot 4 + 70\ :10 =\]
\[= 450 - 120 + 7 = 330 + 7 =\]
\[= 337.\]
\[280\ :7 + 160 \cdot 5 + 70 =\]
\[= 40 + 800 + 70 = 840 + 70 =\]
\[= 910.\]
\[650 + 350 - 80\ :2 \cdot 5 =\]
\[= 650 + 350 - 40 \cdot 5 =\]
\[= 1\ 000 - 200 = 800.\]
\[180 + 20 \cdot 6 - 75\ :25 =\]
\[= 180 + 120 - 3 = 300 - 3 =\]
\[= 297.\ \]
\[\boxed{\text{2.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[980 - (150 + 30)\ :30 =\]
\[= 980 - 180\ :30 = 980 - 6 =\]
\[= 974.\]
\[1\ 600 + (470 - 70) \cdot 3 =\]
\[= 1\ 600 + 400 \cdot 3 =\]
\[= 1\ 600 + 1\ 200 = 2\ 800.\]
\[400 \cdot 3 - (750 - 550) \cdot 4 =\]
\[= 1\ 200 - 200 \cdot 4 =\]
\[= 1\ 200 - 800 = 400.\]
\[820 + (1\ 420 - 1\ 400) \cdot 8 =\]
\[= 820 + 20 \cdot 8 = 820 + 160 =\]
\[= 980.\ \]
\[\boxed{\text{3.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[= 900 - 500\ :100 = 900 - 5 =\]
\[= 895.\]
\[= 870 + 504\ :6 = 870 + 84 =\]
\[= 954.\]
\[= 2\ 400 - 300 \cdot 4 =\]
\[= 2\ 400 - 1\ 200 = 1\ 200.\]
\[= 3\ 060 - 760 + 700 =\]
\[= 3\ 060 - (760 - 700) =\]
\[= 3\ 060 - 60 = 3\ 000.\ \]
\[\boxed{\text{4.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[24 + 36\ :(2 \cdot 3) = 24 + 36\ :6 =\]
\[= 24 + 6 = 30.\]
\[(24 + 36)\ :2 \cdot 3 = 60\ :2 \cdot 3 =\]
\[= 30 \cdot 3 = 90.\]
\[(24 + 36\ :2) \cdot 3 =\]
\[= (24 + 18) \cdot 3 = 42 \cdot 3 = 126.\]
\[(20 \cdot 9 - 6)\ :3 =\]
\[= (180 - 6)\ :3 = 174\ :3 = 58.\]
\[20 \cdot (9 - 6\ :3) = 20 \cdot (9 - 2) =\]
\[= 20 \cdot 7 = 140.\]
\[20 \cdot (9 - 6)\ :3 = 20 \cdot 3\ :3 = 20.\ \]
\[\boxed{\text{5.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[a\] | \[200\] | \[200\] | \[320\] |
---|---|---|---|
\[b\] | \[80\] | \[90\] | \[90\] |
\[a + b\] | \[280\] | \[290\] | \[410\] |
\[a - b\] | \[120\] | \[110\] | \[230\] |
\[c\] | \[20\] | \[40\] | \[80\] |
---|---|---|---|
\[d\] | \[4\] | \[5\] | \[10\] |
\[c \cdot d\] | \[80\] | \[200\] | \[800\] |
\[c\ :d\] | \[5\] | \[8\] | \[8\] |
\[\boxed{\text{6.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\boxed{\text{7.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[= 8\ 014 - 7\ 128 + 1\ 247 =\]
\[= 886 + 1\ 247 = 2\ 133.\]
\[= 7\ 068 + 2\ 040 - 9\ 108 =\]
\[= 9\ 108 - 9\ 108 = 0.\]
\[= 1\ 285 - 21\ 150\ :47 + 804 =\]
\[= 1\ 285 - 450 + 804 =\]
\[= 835 + 804 = 1\ 639.\]
\[= 160\ 680\ :52 + 45\ 948\ :84 =\]
\[= 3\ 090 + 547 = 3\ 637.\]
\[= 1\ 644 \cdot 33 - 975 \cdot 11 =\]
\[= 54\ 252 - 10\ 725 = 43\ 527.\]
\[= (576 + 234) \cdot (47\ 502 - 47\ 000) =\]
\[= 810 \cdot 502 = 406\ 620.\]
\[= (199\ 430 - 95\ 795)\ :(148 + 97) =\]
\[= 103\ 635\ :245 = 423.\]
Величины