1. To find the answer, add the hour she spent on her Mathematics homework and Science homework.
¾ + ⅞ (LCD: 8)
= 6⁄8 + ⅞
= 13⁄8 or 1 ⅝
She spent 1 ⅝ hour on doing all her homework.
2. To know the number of boys, subtract the number of girls which is ¾ of 60 from the total number of students. Remember that the word "of" means to multiply.
60 - (¾ × 60)
= 60 - 45
= 15
There are 15 boys.
3. To find the temperature change, subtract the temperature at the beginning from the last temperature.
8 - (-2)
= 8 + 2
= 10
The temperature change is 10° C.
4. To find the difference in the elevation, subtract the elevation of the Dead Sea from the elevation of Mt. Everest.
29,028 ft - (-485 ft)
= 29,028 ft + 485 ft
= 29,513 ft
The difference is 29,513 ft.
5. To find the part of the yard that is left unclean, find the remaining part of the yard by subtracting the part that Angie cleans from the whole yard. Then, subtract the part that Alex cleans from it.
(1 - 1⁄3) - 1⁄4
= (3⁄3 - 1⁄3) - 1⁄4
= 2⁄3 - 1⁄4 (LCD: 12)
= 8⁄12 - 3⁄12
= 5⁄12
5⁄12 of the yard is left unclean.
#Creditsto@misspancitcanton
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