20
á) 85 + 1325 + (–185) + (–1335) =
â) –27 + 126 + (–3) + 4 =
ã) 209 + 70 + (–1209) + (–70) =
2.à) –73 + (–2,8) + (–27) + 2,8 =
á) 8,5 + 1325 + (–18,5) + (–1335) =
â) 100,6 + (–0,6) + (–624) + 24 =
ã) (7,08 + (–3,2)) + (2,92 + (–6,8)) =
ä) –21 + 126,8 + (–6,8) + (–99) + (–2,001) =
Çàäàíèå 31. Çàïîëíèòå ïðîïóñêè:
à) + á) +
+ = –9; + = 2,5.
++
Çàäàíèå 32. Çàïîëíèòå «ìàãè÷åñêèé» êâàäðàò.
3–2 –6
à) –1 á) –4 –2 0
0–52 2–5
Çàäàíèå 33. Ðåøèòå çàäà÷è.
1. Óòðîì òåìïåðàòóðà âîçäóõà áûëà 12 ∞Ñ, çà äåíü
îíà ïîâûñèëàñü íà 5 °Ñ. Êàêîé ñòàëà òåìïåðàòóðà ê
êîíöó äíÿ?