Для повторения

100 · 0,6 – 0,5 : 0,1 = 

8,4 + 0,01 · 60 = 

1 –$\frac{1}{3}$·$\frac{3}{5}$ = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="77549acf-9abb-45c1-b7b8-161b5eb8ea31"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="3a7114f7-3e87-4c07-bb00-0a8adad6043a"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$

4,5 : 0,5 – 0,8 = 

0,1 : 0,01 · 0,3 = 

 $\frac{4}{9}$+$\frac{1}{2}$·$\frac{4}{9}$ = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="045c00a0-ae9c-46e5-9d7d-c303b9905656"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="52830d03-4b91-42d1-a48a-71668798b2d4"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$

1,2 · 4 + 1,2 · 6 = 

0,08 : 2 : 0,01 = 

$1\frac{1}{4}$ + $2\frac{1}{2}$+$\frac{3}{4}$ = $\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="2b948a01-87a5-443a-8c35-b8a060147f52"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="069cd9f9-1b95-452c-8656-88bac2b2bab3"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="ad80bef8-62e4-4e73-a024-d7248dfa847b"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$

$\frac{1}{7}$a + $\frac{2}{7}$a = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="5fa6ec5b-dc46-4be0-a8dc-da4b8b81fb3b"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="554b41a6-b646-4517-a6ca-41f8eaa63ab9"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$a 
Если a = 7, то значение выражения равно .

$\frac{3}{4}$n + $\frac{5}{6}$n = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="38747560-d12e-43d3-bc55-a538c345697f"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="a760a4de-9de5-48fd-bec8-621dccefdc97"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$n
Если n = $\frac{6}{19}$, то значение выражения равно .

$\frac{7}{8}$a – $\frac{3}{4}$a = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="cb109955-fba9-4a6f-aa74-405367dd7f1e"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="f1f62a32-0113-411d-abb9-ed83541d2db2"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$a
Если a = $2\frac{2}{3}$, то значение выражения равно $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="a2707400-f51c-4bac-80c5-babddc539cc3"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="677bb835-bde4-4458-b31e-b0a232e0588b"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$.

$\frac{2}{3}$x + $\frac{5}{6}$x = x
Если x = 4, то значение выражения равно .

$\frac{5}{6}$m – $\frac{2}{3}$m = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="d3910293-01e9-4631-a421-e6aae7b7e9b2"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="f8cca873-068b-4323-969b-7a9eb2d9bcfb"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$m
Если m = 12, то значение выражения равно .

$1\frac{5}{8}$x – $\frac{3}{4}$x = $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="5ed1f5a5-05f5-48b5-891f-254567a1cd7b"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="0b119134-35d4-47e2-be25-dc7e6c692180"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$x
Если x = $\frac{4}{21}$, то значение выражения равно $\frac{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="c0e054b0-46a3-41d2-946a-1107134e513a"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}{\mathrm{<semantics\; class="mathml-form-input"><annotation-xml\; encoding="application/xhtml+xml"><span\; class="gap\; fourth"\; data-key="d7088271-5b80-4c0a-810b-99acfc400dac"\; contenteditable="true"\; xmlns="http://www.w3.org/1999/xhtml"\; data-empty-is-error="true"></span></annotation-xml></semantics>}}$.