Wykonamy podane działania sposobem pisemnym. Każde działanie sprawdzimy za pomocą dodawania.

Poziom A

a)

Obliczamy

$\begin{array}{r}2535\\ \underline{-121}\\ 2414\end{array}$

Sprawdzenie

$\begin{array}{r}2414\\ \underline{+121}\\ 2535\end{array}$

---

b)

Obliczamy

$\begin{array}{r}1983\\ \underline{-1233}\\ 750\end{array}$

Sprawdzenie

$\begin{array}{r}750\\ \underline{+1233}\\ 1983\end{array}$

---

c)

Obliczamy

$\begin{array}{r}2385\\ \underline{-24}\\ 2361\end{array}$

Sprawdzenie

$\begin{array}{r}2361\\ \underline{+24}\\ 2385\end{array}$

---

d)

Obliczamy

$\begin{array}{r}5183\\ \underline{-2072}\\ 3111\end{array}$

Sprawdzenie

$\begin{array}{r}3111\\ \underline{+2072}\\ 5183\end{array}$

---

e)

Obliczamy

$\begin{array}{r}4758\\ \underline{-2136}\\ 2622\end{array}$

Sprawdzenie

$\begin{array}{r}2622\\ \underline{+2136}\\ 4758\end{array}$

---

f)

Obliczamy

$\begin{array}{r}8752\\ \underline{-8121}\\ 631\end{array}$

Sprawdzenie

$\begin{array}{r}631\\ \underline{+8121}\\ 8752\end{array}$

---

---

Poziom B

a)

Obliczamy

$\begin{array}{r}\stackrel{4}{\cancel{5}}\stackrel{12}{\cancel{2}}4\\ \underline{-173}\\ 351\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{3}51\\ \underline{+173}\\ 524\end{array}$

---

b)

Obliczamy

$\begin{array}{r}18\stackrel{5}{\cancel{6}}\stackrel{17}{\cancel{7}}\\ \underline{-249}\\ 1618\end{array}$

Sprawdzenie

$\begin{array}{r}16\stackrel{1}{1}8\\ \underline{+249}\\ 1867\end{array}$

---

c)

Obliczamy

$\begin{array}{r}\stackrel{3}{\cancel{4}}\stackrel{12}{\cancel{2}}6\\ \underline{-135}\\ 291\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{2}91\\ \underline{+135}\\ 426\end{array}$

---

d)

Obliczamy

$\begin{array}{r}\stackrel{3}{\cancel{4}}\stackrel{10}{\cancel{0}}9\\ \underline{-123}\\ 286\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{2}86\\ \underline{+123}\\ 409\end{array}$

---

e)

Obliczamy

$\begin{array}{r}\stackrel{3}{\cancel{4}}\stackrel{15}{\cancel{5}}21\\ \underline{-610}\\ 3911\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{3}911\\ \underline{+610}\\ 4521\end{array}$

---

f)

Obliczamy

$\begin{array}{r}\stackrel{0}{\cancel{1}}\stackrel{14}{\cancel{4}}30\\ \underline{-520}\\ 910\end{array}$

Sprawdzenie

$\begin{array}{r}910\\ \underline{+520}\\ 1430\end{array}$

---

---

Poziom C

a)

Obliczamy

$\begin{array}{r}5\stackrel{4}{\cancel{5}}\stackrel{9}{\stackrel{\cancel{11}}{\cancel{1}}}\stackrel{16}{\cancel{6}}\\ \underline{-317}\\ 5199\end{array}$

Sprawdzenie

$\begin{array}{r}5\stackrel{1}{1}\stackrel{1}{9}9\\ \underline{+317}\\ 5516\end{array}$

---

b)

Obliczamy

$\begin{array}{r}\stackrel{0}{\cancel{1}}\stackrel{17}{\stackrel{\cancel{18}}{\cancel{8}}}\stackrel{10}{\cancel{0}}7\\ \underline{-962}\\ 845\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{8}45\\ \underline{+962}\\ 1807\end{array}$

---

c)

Obliczamy

$\begin{array}{r}\stackrel{8}{\cancel{9}}\stackrel{10}{\stackrel{\cancel{11}}{\cancel{1}}}\stackrel{15}{\cancel{5}}\\ \underline{-76}\\ 839\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{8}\stackrel{1}{3}9\\ \underline{+76}\\ 915\end{array}$

---

d)

Obliczamy

$\begin{array}{r}\stackrel{4}{\cancel{5}}\stackrel{15}{\stackrel{\cancel{16}}{\cancel{6}}}\stackrel{10}{\cancel{0}}\\ \underline{-78}\\ 482\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{4}\stackrel{1}{8}2\\ \underline{+78}\\ 560\end{array}$

---

e)

Obliczamy

$\begin{array}{r}\stackrel{5}{\cancel{6}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{12}{\cancel{2}}\\ \underline{-83}\\ 519\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{5}\stackrel{1}{1}9\\ \underline{+83}\\ 602\end{array}$

---

f)

Obliczamy

$\begin{array}{r}\stackrel{6}{\cancel{7}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{11}{\cancel{1}}\\ \underline{-63}\\ 638\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{6}\stackrel{1}{3}8\\ \underline{+63}\\ 701\end{array}$

---

---

Poziom D

a)

Obliczamy

$\begin{array}{r}\stackrel{0}{\cancel{1}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{17}{\cancel{7}}\\ \underline{-328}\\ 679\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{6}\stackrel{1}{7}9\\ \underline{+328}\\ 1007\end{array}$

---

b)

Obliczamy

$\begin{array}{r}5\stackrel{1}{\cancel{2}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}\\ \underline{-672}\\ 51328\end{array}$

Sprawdzenie

$\begin{array}{r}5\stackrel{1}{1}\stackrel{1}{3}\stackrel{1}{2}8\\ \underline{+672}\\ 52000\end{array}$

---

c)

Obliczamy

$\begin{array}{r}\stackrel{4}{\cancel{5}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}9\\ \underline{-73}\\ 4936\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{4}\stackrel{1}{9}36\\ \underline{+73}\\ 5009\end{array}$

---

d)

Obliczamy

$\begin{array}{r}\stackrel{0}{\cancel{1}}\stackrel{10}{\cancel{0}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}\\ \underline{-562}\\ 9438\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{9}\stackrel{1}{4}\stackrel{1}{3}8\\ \underline{+562}\\ 10000\end{array}$

---

e)

Obliczamy

$\begin{array}{r}\stackrel{1}{\cancel{2}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}6\\ \underline{-780}\\ 1226\end{array}$

Sprawdzenie

$\begin{array}{r}1\stackrel{1}{2}\stackrel{1}{2}6\\ \underline{+780}\\ 2006\end{array}$

---

f)

Obliczamy

$\begin{array}{r}1\stackrel{4}{\cancel{5}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}01\\ \underline{-100501}\\ 49500\end{array}$

Sprawdzenie

$\begin{array}{r}\stackrel{1}{4}\stackrel{1}{9}500\\ \underline{+100501}\\ 150001\end{array}$