# Equation - 6th grade (11y) - math problems

1. Library New books were purchased for the library. Five-eighths were professional books, one-fifth were encyclopedias, and 231 books were dictionaries. How many professional books were there?
2. Equation with one variable Solve the following equation with one unknown: 5(7s + 5) =130
3. The temperature 4 The temperature was very cold, then it doubled, then it dropped 10 degrees, and then it increased by 40 degrees. The temperature is now 16 degrees. What was the starting temperature?
4. The orchard 4 temporary workers harvested the orchard in 9 days. How many temporary workers we need for six days?
5. Equal temperature The temperatures of the two cities were measured at the same time. The temperature in city A was 60 degrees And rose at a constant rate of 2 degrees per hour. The temperature in city B was 40° and rose at a constant rate of 10° per hour Enter the tim
6. Pupil I'm a primary school pupil. I attended the exercises of parents with children 1/4 of my age, 1/3 for drawing, and 1/6 for flute. For the first three years of my life, I had no ring, and I never went to two rings at the same time. How old am I?
7. Father and sons Father is 27 and his sons 2 and one year. In how many years will his sons sum up to half his age?
8. Simple equation 10 35= 7*3*x what is x?
9. 45th birthday This year Mrs. Clever celebrated her 45th birthday. Her three children are now 7.11 and 15 years old. In how many years will Mrs. Clever's age be equal to the sum of her children's years? The fruit basket is five times heavier than the empty basket. Filled is 20kg heavier than empty. Determine the weight of the fruit in the basket. Calculate the radius of the circle whose length is 107 cm larger than its diameter
12. Dividing money Vilem, Cenek, and Edita divided the money they earned by spreading the leaflet. Vilem got 240 CZK more than Cenek and twice more than Edita. Edita got 400kc less than Vilem.
13. Simple equation 9 Solve the following equation: -8y+5=-9y+9
14. Mother and daughter Mother is 44 years old, her daughter 14. How many years ago was her mother four times older than her daughter?
15. Simple equation 8 Solve the following equation: 36=-(1+7x)-6(-7-x)
16. Brother and sister When I was 8, my sister was 4, now I am 18, how old is my sister?
17. Missing number Blank +1/6 =3/2 find the missing number
18. Six te 2 If 3t-7=5t, then 6t=
19. Examination 2 In an examination, a teacher awards 2 marks for every correct answer and subtract a mark for every wrong answer. If there are 20 questions and a child scored 25 marks how many correct answer did the child get?
20. Number of songs Write an expression for the number of songs they need for this show. Evan and Peter have a radio show that has 2 parts. They need 4 fewer than 11 songs in the first part. In the second part, they need 5 fewer than 3 times the number of songs in the first

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