Procvičování na zahajovací písemnou práci 8. ročník

Procvičování na zahajovací písemnou práci 8. ročník

8th Grade

20 Qs

quiz-placeholder

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Procvičování na zahajovací písemnou práci 8. ročník

Procvičování na zahajovací písemnou práci 8. ročník

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

Veronika Kuncová

Used 3+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 35+14=\frac{3}{5}+\frac{1}{4}=  

 1720\frac{17}{20}  

 49\frac{4}{9}  

 179\frac{17}{9}  

 420\frac{4}{20}  

Answer explanation

 35+14=3.4+1.520=12+520=175\frac{3}{5}+\frac{1}{4}=\frac{3.4+1.5}{20}=\frac{12+5}{20}=\frac{17}{5}  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 79310=\frac{7}{9}-\frac{3}{10}=  

 41\frac{4}{1}  

 4390\frac{43}{90}  

 490\frac{4}{90}  

 419\frac{4}{19}  

Answer explanation

 79310=7.103.990=702790=4390\frac{7}{9}-\frac{3}{10}=\frac{7.10-3.9}{90}=\frac{70-27}{90}=\frac{43}{90}  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 125(45+215)=\frac{12}{5}-\left(\frac{4}{5}+\frac{2}{15}\right)=  

 615\frac{6}{15}  

 1730\frac{17}{30}  

 2215\frac{22}{15}  

 922\frac{9}{22}  

Answer explanation

 125(45+215)=1254.3+215=1251415=12.31415=361415=2215\frac{12}{5}-\left(\frac{4}{5}+\frac{2}{15}\right)=\frac{12}{5}-\frac{4.3+2}{15}=\frac{12}{5}-\frac{14}{15}=\frac{12.3-14}{15}=\frac{36-14}{15}=\frac{22}{15}  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 2.(214+156)=2.\left(2\frac{1}{4}+1\frac{5}{6}\right)=  

 496\frac{49}{6}  

 2324\frac{23}{24}  

 1912\frac{19}{12}  

 249\frac{2}{49}  

Answer explanation

 2.(214+156)=2.(94+116)=2.(9.3+11.212)=2. 27+2212=21.4912=4962.\left(2\frac{1}{4}+1\frac{5}{6}\right)=2.\left(\frac{9}{4}+\frac{11}{6}\right)=2.\left(\frac{9.3+11.2}{12}\right)=2.\ \frac{27+22}{12}=\frac{2}{1}.\frac{49}{12}=\frac{49}{6}  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 1825 . 159=\frac{18}{25}\ .\ \frac{15}{9}=  

 610\frac{6}{10}  

 59\frac{5}{9}  

 56\frac{5}{6}  

 65\frac{6}{5}  

Answer explanation

 1825 . 159=25 . 31=65\frac{18}{25}\ .\ \frac{15}{9}=\frac{2}{5}\ .\ \frac{3}{1}=\frac{6}{5}  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 516 :1540=\frac{5}{16}\ :\frac{15}{40}=  

 65\frac{6}{5}  

 3056\frac{30}{56}  

 56\frac{5}{6}  

 1217\frac{12}{17}  

Answer explanation

 516 :1540=516 . 4015=14 . 103=1012=56\frac{5}{16}\ :\frac{15}{40}=\frac{5}{16}\ .\ \frac{40}{15}=\frac{1}{4}\ .\ \frac{10}{3}=\frac{10}{12}=\frac{5}{6}  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 214 : 316=2\frac{1}{4}\ :\ \frac{3}{16}=  

 1212  

 34\frac{3}{4}  

 44  

 43\frac{4}{3}  

Answer explanation

 214 : 316=94 . 163=31 . 41=122\frac{1}{4}\ :\ \frac{3}{16}=\frac{9}{4}\ .\ \frac{16}{3}=\frac{3}{1}\ .\ \frac{4}{1}=12  

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