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Mental Sum Practice 3

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Interval Problems

Question 1 of 50

$\frac{8}{13} \div 9 + \frac{1}{9} \times \frac{5}{13}$ = ?

$\frac{1}{3}$

$\frac{1}{6}$

$\frac{1}{9}$

$\frac{1}{12}$

None of the above

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$\frac{1}{9}$

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$(\frac{2}{3} + \frac{1}{2}) \times \frac{6}{7}$ = ?

None of the above

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$(\frac{2}{3} + \frac{3}{4} - \frac{1}{2}) \times 12$ = ?

None of the above

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$\frac{1}{4} \div ( 3 - \frac{5}{13} - \frac{8}{13} )$ = ?

$\frac{1}{2}$

$\frac{1}{4}$

$\frac{1}{6}$

$\frac{1}{8}$

None of the above

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$\frac{1}{8}$

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$\frac{12}{13} \times \frac{5}{9} + \frac{4}{9} \times \frac{12}{13}$ = ?

$\frac{10}{11}$

$\frac{11}{12}$

$\frac{12}{13}$

$\frac{14}{15}$

None of the above

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$\frac{12}{13}$

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$\frac{8}{13} \div 7 + \frac{1}{7} \times \frac{6}{13}$ = ?

$\frac{2}{13}$

$\frac{4}{15}$

$\frac{6}{17}$

$\frac{8}{19}$

None of the above

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$\frac{2}{13}$

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$21 \div \frac{3}{5} - \frac{2}{5} \times 25$ = ?

None of the above

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$\frac{2}{3} \div (\frac{3}{4} - \frac{1}{2}) \times \frac{4}{5}$ = ?

$\frac{26}{9}$

$\frac{28}{11}$

$\frac{30}{13}$

$\frac{32}{15}$

None of the above

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$\frac{32}{15}$

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$\frac{1}{5} + \frac{2}{9} \times \frac{3}{10}$ = ?

$\frac{1}{11}$

$\frac{3}{13}$

$\frac{4}{15}$

$\frac{5}{17}$

None of the above

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$\frac{4}{15}$

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$(\frac{4}{5} + \frac{3}{10}) \div \frac{11}{15}$ = ?

$\frac{3}{2}$

$\frac{4}{3}$

$\frac{5}{4}$

$\frac{6}{5}$

None of the above

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$\frac{3}{2}$

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$\frac{1}{2} - \frac{1}{2} \div 2$ = ?

$\frac{1}{2}$

$\frac{1}{4}$

$\frac{1}{6}$

$\frac{1}{8}$

None of the above

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$\frac{1}{4}$

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$\frac{6}{19} \times \frac{1}{7} + \frac{8}{19} \div 7$ = ?

$\frac{1}{17}$

$\frac{2}{17}$

$\frac{1}{19}$

$\frac{2}{19}$

None of the above

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$\frac{2}{19}$

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$\frac{3}{4} + \frac{3}{4} \times \frac{1}{3}$ = ?

None of the above

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$\frac{9}{33} \div \frac{9}{14} + \frac{9}{33} \times \frac{4}{9}$ = ?

$\frac{6}{11}$

$\frac{7}{12}$

$\frac{8}{13}$

$\frac{9}{14}$

None of the above

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$\frac{6}{11}$

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$\frac{3}{5} \times \frac{14}{9} - \frac{4}{9} \times \frac{3}{5}$ = ?

$\frac{1}{2}$

$\frac{2}{3}$

$\frac{3}{4}$

$\frac{4}{5}$

None of the above

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$\frac{2}{3}$

You are Right

$\frac{2}{3} \div (\frac{3}{4} - \frac{1}{2}) \times \frac{4}{5}$ = ?

$\frac{32}{15}$

$\frac{33}{16}$

$\frac{34}{17}$

$\frac{38}18{}$

None of the above

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$\frac{32}{15}$

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$(\frac{2}{3} + \frac{3}{4} - \frac{1}{2}) \times 12$ = ?

None of the above

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$42 \times ( \frac{5}{7} - \frac{4}{7} )$ = ?

None of the above

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$\frac{4}{7} \div \frac{3}{2} + \frac{4}{7} \div 3$ = ?

$\frac{2}{3}$

$\frac{3}{5}$

$\frac{4}{7}$

$\frac{5}{9}$

None of the above

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$\frac{4}{7}$

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$7.8 \times \frac{1}{10} + \frac{1}{10} \times 2.2$ = ?

0.5

1.5

None of the above

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$\frac{3}{4} + \frac{3}{4} \times \frac{1}{3}$ = ?

None of the above

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$21 \div \frac{3}{5} - \frac{2}{5} \times 25$ = ?

None of the above

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$(20 + \frac{5}{7}) \times \frac{9}{10}$ = ?

$\frac{156}{8}$

$\frac{158}{10}$

$\frac{260}{12}$

$\frac{261}{14}$

None of the above

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$\frac{261}{14}$

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$7.8 \times \frac{1}{10} + \frac{1}{10} \times 2.2$ = ?

0.5

1.5

None of the above

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$\frac{8}{13} \div 7 + \frac{1}{7} \times \frac{6}{13}$ = ?

$\frac{1}{11}$

$\frac{2}{13}$

$\frac{3}{15}$

$\frac{4}{17}$

None of the above

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$\frac{2}{13}$

You are Right

$\frac{5}{8} \times \frac{4}{3} + \frac{5}{8} \div \frac{3}{4}$ = ?

$\frac{5}{3}$

$\frac{7}{5}$

$\frac{9}{7}$

$\frac{11}{9}$

None of the above

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$\frac{5}{3}$

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$\frac{9}{33} \div \frac{9}{14} + \frac{9}{33} \times \frac{4}{9}$ = ?

$\frac{8}{9}$

$\frac{6}{11}$

$\frac{8}{13}$

$\frac{10}{15}$

None of the above

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$\frac{6}{11}$

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$\frac{11}{13} - \frac{11}{13} \times \frac{13}{33}$ = ?

$\frac{18}{37}$

$\frac{19}{38}$

$\frac{20}{39}$

$\frac{21}{40}$

None of the above

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$\frac{20}{39}$

You are Right

$\frac{3}{5} \times \frac{14}{9} - \frac{4}{9} \times \frac{3}{5}$ = ?

$\frac{1}{2}$

$\frac{2}{3}$

$\frac{3}{4}$

$\frac{4}{5}$

None of the above

Sorry. Please check the correct answer below.

View Correct Answer

$\frac{2}{3}$

You are Right

$\frac{4}{5} \div 3 + \frac{2}{3} \times \frac{4}{5}$ = ?

$\frac{2}{3}$

$\frac{4}{5}$

$\frac{6}{7}$

$\frac{8}{9}$

None of the above

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View Correct Answer

$\frac{4}{5}$

You are Right

$\frac{1}{3} \times 9 \div \frac{1}{9} \div 9$ = ?

None of the above

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You are Right

$\frac{1}{5} + \frac{2}{9} \times \frac{3}{10}$ = ?

$\frac{2}{10}$

$\frac{4}{15}$

$\frac{6}{20}$

$\frac{8}{25}$

None of the above

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$\frac{4}{15}$

You are Right

$(\frac{2}{3} + \frac{1}{2} ) \times \frac{6}{7}$ = ?

0.5

1.5

None of the above

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You are Right

$\frac{2}{11} + \frac{9}{8} \times \frac{7}{9} + \frac{1}{8}$ = ?

1$\frac{1}{10}$

1$\frac{2}{11}$

1$\frac{3}{12}$

1$\frac{4}{13}$

None of the above

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1$\frac{2}{11}$

You are Right

$(1 - \frac{1}{2} - \frac{1}{9}) \div \frac{1}{5}$ = ?

$\frac{31}{15}$

$\frac{33}{17}$

$\frac{35}{18}$

$\frac{37}{19}$

None of the above

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$\frac{35}{18}$

You are Right

$\frac{2}{11} + \frac{9}{8} \times \frac{7}{9} + \frac{1}{8}$ = ?

$\frac{11}{9}$

$\frac{13}{11}$

$\frac{15}{13}$

$\frac{17}{15}$

None of the above

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$\frac{13}{11}$

You are Right

$44 – 72 \times \frac{5}{12}$ = ?

None of the above

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$42 \times \frac{5}{36}$ = ?

$\frac{31}{2}$

$\frac{33}{4}$

$\frac{35}{6}$

$\frac{37}{8}$

None of the above

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$\frac{35}{6}$

You are Right

$ \frac{1}{4} \div ( 3 - \frac{5}{13} - \frac{8}{13} )$ = ?

$\frac{1}{4}$

$\frac{1}{8}$

$\frac{2}{4}$

$\frac{2}{8}$

None of the above

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$\frac{1}{8}$

You are Right

$\frac{11}{13} - \frac{11}{13} \times \frac{13}{33}$ = ?

$\frac{16}{35}$

$\frac{18}{37}$

$\frac{20}{39}$

$\frac{22}{41}$

None of the above

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$\frac{20}{39}$

You are Right

$44 – 72 \times \frac{5}{12}$ = ?

None of the above

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You are Right

$( 20 + \frac{5}{7} ) \times \frac{9}{10}$ = ?

17$\frac{6}{14}$

17$\frac{9}{14}$

18$\frac{6}{12}$

18$\frac{9}{14}$

None of the above

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18$\frac{9}{14}$

You are Right

$\frac{3}{5} + \frac{4}{7} + \frac{2}{5} + \frac{1}{7}$ = ?

1$\frac{3}{5}$

1$\frac{5}{7}$

2$\frac{3}{5}$

2$\frac{5}{7}$

None of the above

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1$\frac{5}{7}$

You are Right

$42 \times \frac{5}{36}$ = ?

$\frac{32}{5}$

$\frac{35}{6}$

$\frac{39}{7}$

$\frac{43}{9}$

None of the above

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$\frac{35}{6}$

You are Right

$\frac{4}{7} \times \frac{5}{8} + \frac{3}{7} \div \frac{8}{5}$ = ?

$\frac{5}{8}$

$\frac{6}{9}$

$\frac{7}{10}$

$\frac{8}{11}$

None of the above

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$\frac{5}{8}$

You are Right

$\frac{1}{3} \times 9 \div \frac{1}{9} \div 9$ = ?

None of the above

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View Correct Answer

You are Right

$\frac{8}{13} \div 9 + \frac{1}{9} \times \frac{5}{13}$ = ?

$\frac{1}{3}$

$\frac{1}{5}$

$\frac{1}{7}$

$\frac{1}{9}$

None of the above

Sorry. Please check the correct answer below.

View Correct Answer

$\frac{1}{9}$

You are Right

$\frac{3}{5} + \frac{4}{7} + \frac{2}{5} + \frac{1}{7}$ = ?

$\frac{8}{3}$

$\frac{10}{5}$

$\frac{12}{7}$

$\frac{14}{9}$

None of the above

Sorry. Please check the correct answer below.

View Correct Answer

$\frac{12}{7}$

You are Right

$42 \times (\frac{5}{7} - \frac{4}{7})$ = ?

None of the above

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View Correct Answer

You are Right

$\frac{2}{5} + \frac{1}{2} \times \frac{3}{5} + \frac{7}{10}$ = ?

1$\frac{2}{5}$

1$\frac{4}{7}$

2$\frac{2}{5}$

2$\frac{4}{7}$

None of the above

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1$\frac{2}{5}$

You are Right

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