Sasi Math (Revised for 1024)

Scroll:Fractions >> Multiplication >> ps (379)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.

Ponnalagu read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 720 pages on Saturday, how many pages were left unread

Answer:_______________

Amutha read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 350 pages on Saturday, how many pages were left unread

Answer:_______________

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 185 pages on Saturday, how many pages were left unread

Answer:_______________

Haritha read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 672 pages on Saturday, how many pages were left unread

Answer:_______________

Jeevini read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 660 pages on Saturday, how many pages were left unread

Answer:_______________

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 455 pages on Saturday, how many pages were left unread

Answer:_______________

Nandini read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 760 pages on Saturday, how many pages were left unread

Answer:_______________

Nandini read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 340 pages on Saturday, how many pages were left unread

Answer:_______________

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 590 pages on Saturday, how many pages were left unread

Answer:_______________

10)

Poongodi read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 312 pages on Saturday, how many pages were left unread

Answer:_______________

Ponnalagu read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 720 pages on Saturday, how many pages were left unread

Answer: 630

SOLUTION 1 :

$720

Sunday

Left

Step 1 : $\frac{2}{5}$ + $\frac{1}{4}$ = $\frac{8}{20}$ + $\frac{5}{20}$

= $\frac{13}{20}$

Step 2 : $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 8 units = 720

1 unit = 720 ÷ 8

= 90

Step 4 : 7 units = 7 x 90

= 630

630 pages were left unread.

Amutha read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 350 pages on Saturday, how many pages were left unread
Answer: 70

SOLUTION 1 :

$350

Sunday

Left

Step 1 : $\frac{2}{3}$ + $\frac{1}{5}$ = $\frac{10}{15}$ + $\frac{3}{15}$

= $\frac{13}{15}$

Step 2 : $\frac{15}{15}$ - $\frac{13}{15}$ = $\frac{2}{15}$ (left)

Step 3 : 10 units = 350

1 unit = 350 ÷ 10

= 35

Step 4 : 2 units = 2 x 35

= 70

70 pages were left unread.

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 185 pages on Saturday, how many pages were left unread
Answer: 259

SOLUTION 1 :

$185

Sunday

Left

Step 1: $\frac{1}{4}$ + $\frac{2}{5}$ = $\frac{5}{20}$ + $\frac{8}{20}$ = $\frac{13}{20}$

Step 2: $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 5 units = 185

1 unit = 185 ÷ 5
= 37

Step 4 : 7 units = 7 x 37

= 259

259 pages were left unread.

Haritha read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 672 pages on Saturday, how many pages were left unread

Answer: 588

SOLUTION 1 :

$672

Sunday

Left

Step 1 : $\frac{2}{5}$ + $\frac{1}{4}$ = $\frac{8}{20}$ + $\frac{5}{20}$

= $\frac{13}{20}$

Step 2 : $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 8 units = 672

1 unit = 672 ÷ 8

= 84

Step 4 : 7 units = 7 x 84

= 588

588 pages were left unread.

Jeevini read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 660 pages on Saturday, how many pages were left unread
Answer: 132

SOLUTION 1 :

$660

Sunday

Left

Step 1 : $\frac{2}{3}$ + $\frac{1}{5}$ = $\frac{10}{15}$ + $\frac{3}{15}$

= $\frac{13}{15}$

Step 2 : $\frac{15}{15}$ - $\frac{13}{15}$ = $\frac{2}{15}$ (left)

Step 3 : 10 units = 660

1 unit = 660 ÷ 10

= 66

Step 4 : 2 units = 2 x 66

= 132

132 pages were left unread.

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 455 pages on Saturday, how many pages were left unread
Answer: 637

SOLUTION 1 :

$455

Sunday

Left

Step 1: $\frac{1}{4}$ + $\frac{2}{5}$ = $\frac{5}{20}$ + $\frac{8}{20}$ = $\frac{13}{20}$

Step 2: $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 5 units = 455

1 unit = 455 ÷ 5
= 91

Step 4 : 7 units = 7 x 91

= 637

637 pages were left unread.

Nandini read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 760 pages on Saturday, how many pages were left unread

Answer: 665

SOLUTION 1 :

$760

Sunday

Left

Step 1 : $\frac{2}{5}$ + $\frac{1}{4}$ = $\frac{8}{20}$ + $\frac{5}{20}$

= $\frac{13}{20}$

Step 2 : $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 8 units = 760

1 unit = 760 ÷ 8

= 95

Step 4 : 7 units = 7 x 95

= 665

665 pages were left unread.

Nandini read $\frac{2}{3}$ of a book on Saturday and $\frac{1}{5}$ of it on Sunday. If she read 340 pages on Saturday, how many pages were left unread
Answer: 68

SOLUTION 1 :

$340

Sunday

Left

Step 1 : $\frac{2}{3}$ + $\frac{1}{5}$ = $\frac{10}{15}$ + $\frac{3}{15}$

= $\frac{13}{15}$

Step 2 : $\frac{15}{15}$ - $\frac{13}{15}$ = $\frac{2}{15}$ (left)

Step 3 : 10 units = 340

1 unit = 340 ÷ 10

= 34

Step 4 : 2 units = 2 x 34

= 68

68 pages were left unread.

Alicia read $\frac{1}{4}$ of a book on Saturday and $\frac{2}{5}$ of it on Sunday. If she read 590 pages on Saturday, how many pages were left unread
Answer: 826

SOLUTION 1 :

$590

Sunday

Left

Step 1: $\frac{1}{4}$ + $\frac{2}{5}$ = $\frac{5}{20}$ + $\frac{8}{20}$ = $\frac{13}{20}$

Step 2: $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 5 units = 590

1 unit = 590 ÷ 5
= 118

Step 4 : 7 units = 7 x 118

= 826

826 pages were left unread.

10)

Poongodi read $\frac{2}{5}$ of a book on Saturday and $\frac{1}{4}$ of it on Sunday. If she read 312 pages on Saturday, how many pages were left unread

Answer: 273

SOLUTION 1 :

$312

Sunday

Left

Step 1 : $\frac{2}{5}$ + $\frac{1}{4}$ = $\frac{8}{20}$ + $\frac{5}{20}$

= $\frac{13}{20}$

Step 2 : $\frac{20}{20}$ - $\frac{13}{20}$ = $\frac{7}{20}$

Step 3 : 8 units = 312

1 unit = 312 ÷ 8

= 39

Step 4 : 7 units = 7 x 39

= 273

273 pages were left unread.