$\frac{12}{\text{-}4}=\text{-}3$ omdat $\text{-}4\times \text{-}3=12$

$\frac{\text{-}12}{4}=\text{-}3$ omdat $4\times \text{-}3=\text{-}12$

$\frac{\text{-}12}{\text{-}4}=3$ omdat $\text{-}4\times 3=\text{-}12$

$\frac{\text{-}110}{\text{-}11}=10$ omdat $\text{-}11\times 10=\text{-}110$

$\frac{48}{\text{-}8}=\text{-}6$ omdat $\text{-}8\times \text{-}6=48$

$\frac{\text{-}35}{7}=\text{-}5$ omdat $7\times \text{-}5=\text{-}35$

positief getal / positief getal = positief getal

positief getal / negatief getal = negatief getal

negatief getal / positief getal = negatief getal

negatief getal / negatief getal = positief getal

$\frac{75}{\text{-}15}=\text{-}5$

$\frac{\text{-}144}{\text{-}6}=24$

$\frac{\text{-}32}{8}\times 5=\text{-}20$

$\frac{96}{\text{-}4}-\frac{\text{-}12}{3}=\text{-}24+4=\text{-}20$

$\frac{0}{12}=0$ want $12\times 0=0$

$\frac{0}{\text{-}3}=0$ want $\text{-}3\times 0=0$

$0$

Er is geen getal te vinden dat hier kan worden ingevuld.

Er is geen getal te vinden dat hier kan worden ingevuld.

Nu kun je juist elk getal invullen.

$\frac{8-\text{-}4}{6}=2$

$\frac{15}{\text{-}12-\text{-}18}=\mathrm{2,5}$

$12\times \frac{\text{-}2}{24+\text{-}8}=\text{-}\mathrm{1,5}$

$15/(8-11)=\text{-}5$

$\frac{\text{-}20-6}{10-\text{-}3}=\text{-}2$

$\frac{\text{-}\mathrm{12,25}+\mathrm{34,75}}{10}=\mathrm{2,25}$

$60/\text{-}12=\text{-}5$

$\frac{\text{-}48}{16}=\text{-}3$

$\text{-}\mathrm{2,25}/\mathrm{0,5}=\text{-}\mathrm{4,5}$

$\text{-}18/(\text{-}5-4)=2$

$\frac{120-240}{12}=\text{-}10$

$\frac{\text{-}3-\text{-}3}{\text{-}3-38}=0$

$\text{-}\mathrm{47,275}/\text{-}\mathrm{15,25}\approx \text{-}45/\text{-}15=3$. Het antwoord is: $\mathrm{3,1}$.

$\frac{\text{-}\mathrm{6,15}}{\mathrm{0,05}}+\mathrm{15,5}\approx \frac{\text{-}6}{\mathrm{0,05}}+15=\text{-}120+15\approx \text{-}100$. Het antwoord is: $\text{-}\mathrm{107,5}$.

$\mathrm{3,6}/(\text{-}\mathrm{1,06}+\mathrm{1,18})\approx 4/\mathrm{0,1}=40$. Het antwoord is: $30$.

$\frac{\mathrm{1,12}-\mathrm{0,88}}{\text{-}\mathrm{2,4}+\mathrm{7,2}}\approx \frac{\mathrm{0,4}}{5}=\mathrm{0,08}$. Het antwoord is: $\mathrm{0,05}$.

$\mathrm{213,275}/\text{-}\mathrm{15,3}\approx 210/\text{-}15=\text{-}14$. Het antwoord is: $\approx \text{-}\mathrm{13,940}$.

$\frac{\text{-}\mathrm{6,6}}{\mathrm{0,07}-\mathrm{1,55}}\approx \frac{\text{-}6}{\text{-}\mathrm{1,5}}=4$. Het antwoord is: $\approx \mathrm{4,459}$.

$\mathrm{3,6}/(\text{-}\mathrm{1,06}+\mathrm{1,17})\approx 4/\mathrm{0,1}=40$. Het antwoord is: $\approx \mathrm{32,727}$.

$\frac{\mathrm{2,14}-\mathrm{3,88}}{\text{-}\mathrm{0,24}-\mathrm{0,53}}\approx \frac{\text{-}2}{\text{-}1}=2$. Het antwoord is: $\approx \mathrm{2,260}$.

$\frac{125}{\text{-}50}=\text{-}\mathrm{2,5}$

$\frac{\text{-}15-\text{-}20}{\text{-}4-3}=\text{-}\mathrm{}\frac{5}{7}$

$\text{-}3\times (6-\text{-}18)/\text{-}8+4=13$

$5\times \text{-}2/(4-8)=\mathrm{2,5}$

$\frac{6-3}{\text{-}12+7}=\text{-}\mathrm{0,6}$

$\frac{5}{9}\times (5-32)=\text{-}15$

$\frac{18}{1-4}=\text{-}6$

$\frac{8\times \text{-}2}{\text{-}10+4}=\frac{8}{3}$

$\frac{8-\text{-}12}{5}-3=1$

$13-\frac{12}{\text{-}}=17$

Maak steeds eerst de schatting!
Antwoord: $\approx \mathrm{0,456}$.

$\approx \mathrm{2,904}$

$\approx \text{-}\mathrm{0,923}$

$\approx \text{-}\mathrm{0,002}$

$\approx \text{-}\mathrm{217,429}$

$\approx \text{-}\mathrm{14,122}$

$\approx \mathrm{0,097}$

$11$

Doen, vergelijk je antwoord met dat in Toepassen .

$\text{-}17\frac{7}{9}$ °C.

$37\frac{7}{9}$ °C.

$32$ °F.

$\text{-}\mathrm{}\frac{2}{3}$

$\frac{11}{14}$

$\text{-}\mathrm{}\frac{2}{3}$

$\frac{63}{92}$

$\frac{64}{\text{-}16}=\text{-}4$

$\frac{\text{-}64}{\text{-}16}=4$

$\frac{\text{-}64}{16}=\text{-}4$

$\frac{5-75}{\text{-}8-2}=7$

$\text{-}5+34/(5-7)=\text{-}22$

Het is dan $68$°F.

Het is dan $14$°F.