Сагс хоосон байна
Mixed exercises
If possible, make an estimation before solving the exercises, then check your results.
{{exercise_number}}. Perform the multiplications and arrange the products in ascending order.
\latex{ 40\times21 }
\latex{ 29\times28 }
\latex{ 21\times41 }
\latex{ 92\times9 }
\latex{ 58\times15 }
\latex{ 291\times3 }
\latex{ 19\times43 }
\latex{ T }
\latex{ F }
\latex{ O }
\latex{ C }
\latex{ R }
\latex{ S }
\latex{ A }
{{exercise_number}}. Perform the following operations.
a) \latex{333,333 \div 9}
b) \latex{999,999 \div 7}
c) \latex{10,000 \div 27}
d) \latex{10,000 \div 37}
{{exercise_number}}. Perform the calculations. Pay attention to the order.
a) \latex{17,264 \div 8 -475 \times 3}
b) \latex{(17,264 \div 8 - 475) \times 3}
c) \latex{(3,775 + 1,250) \div 25}
d) \latex{3,775\div25+1,250\div 5}
{{exercise_number}}. Juice was delivered to a supermarket. There are \latex{ 4 } boxes in a pack, \latex{ 12 } packs in a crate, and \latex{ 3 } rows of \latex{ 5 } crates on a pallet. How many boxes arrived at the supermarket on two pallets?
{{exercise_number}}. When Mark was born, his father was \latex{ 5 } years older than his mother. Mark is \latex{ 12 } years old now, his mother is \latex{ 37 } years old. What is the age difference between his parents now?
{{exercise_number}}. Mum made us \latex{ 30 } pancakes. I ate three every time, while my sister ate two. How many did each of us eat if there were no pancakes left?
{{exercise_number}}. A basket of nuts was divided between three children equally. When each of them ate \latex{ 8 } of their nuts, they had the same number together, as each of them had at the beginning. How many nuts did they get initially?
{{exercise_number}}. Which of the following statements is false if \latex{ a } \latex{= 6 \times b?}
a) \latex{ a } is six times \latex{ b }
b) \latex{ 6 } is \latex{ a } times \latex{ b }
c) \latex{ 6 } is \latex{ b } times \latex{ a }
d) \latex{ a } is one-sixth of \latex{ b }
e) \latex{ a } is larger than \latex{ b } by \latex{ 6 }
f) \latex{ b } is six times \latex{ a }
{{exercise_number}}. In a nursery, \latex{ 32,500 } pepper plants were planted in \latex{ 17 } days. How many were planted each day on average?
{{exercise_number}}. The highest peak on Earth, Mount Everest, is \latex{ 8,848\,m } high; the deepest point in the ocean, the Mariana Trench, is \latex{ 11,034\,m } deep. How tall would the water column be above Mount Everest if it was found at the bottom of the Mariana Trench?
{{exercise_number}}. John has \latex{ 142 } €\latex{ 2 } coins and \latex{ 304 } €\latex{ 1 } coins in his piggy bank. How many €\latex{ 20 } banknotes can he get for his coins?
Will he have any coins left?
Will he have any coins left?
{{exercise_number}}. There are \latex{ 30 } students in a class and \latex{ 600 } students in the whole school. Every student has \latex{ 5 } lessons every day, and every teacher gives \latex{ 4 } lessons each day. One teacher teaches every lesson to a whole class. How many teachers are there?
{{exercise_number}}. Zack got \latex{ 100 } points with \latex{ 8 } shots. How many fives did he score if most of his arrows hit the \latex{ 12 }-point sector, some of his shots hit the \latex{ 21 }-point sector, and these were the only three sectors he hit?
\latex{ 5 }
\latex{ 12 }
\latex{ 19 }
\latex{ 21 }
\latex{ 25 }
{{exercise_number}}. The grey whale is the mammal with the longest migration route. It travels \latex{ 12,000\,–\,20,000\,km } every \latex{ year. }
a) At least how many \latex{ kilometres } did a \latex{ 42 }-\latex{ year }-old whale swim?
b) At most how many \latex{ kilometres } did a \latex{ 42 }-\latex{ year }-old whale swim?
b) At most how many \latex{ kilometres } did a \latex{ 42 }-\latex{ year }-old whale swim?
(During its lifetime, it travels the same distance as if it swam to the Moon and back.)
{{exercise_number}}. Eva copied an addition from her classmate's notebook but got one of the digits wrong. Which digit should be changed everywhere to make the addition correct? What number should it be replaced by?
\latex{ , }
\latex{ , }
\latex{ 0 }
\latex{ + }
\latex{ 1 }
\latex{ 2 }
\latex{ 0 }
\latex{ 1 }
\latex{ 6 }
\latex{ 6 }
\latex{ 8 }
\latex{ 3 }
\latex{ 5 }
\latex{ 4 }
\latex{ 2 }
\latex{ 9 }
\latex{ 4 }
\latex{ 2 }
\latex{ 7 }
\latex{ 8 }
\latex{ 2 }
\latex{ 1 }
{{exercise_number}}. I have thought of a number. After dividing it by \latex{ 10 }, adding \latex{ 99 } to the quotient and eliminating the last digit, which is \latex{ 6 }, you get \latex{ 12 }. What number did I think of?
{{exercise_number}}. In a store, half a \latex{ litre } of shower gel costs €\latex{ 3 }. At another store, the same shower gel in a \latex{ 200\,ml } bottle costs €\latex{ 1 }. Which shower gel is worth buying?
{{exercise_number}}. An adult male lion weighs \latex{ 150 \,–\,225\,kg }, while females weigh \latex{ 125\,–\,180\,kg }.
Which of the following statements are true? Which are false?
- A male lion can weigh twice as much as a female.
- All male lions weigh more than the haviest lioness.
- There are female lions that weigh more than male lions.
- Male lions can weigh \latex{ 30\,kg } more than female lions.
- There are no male lions weighing less than a female lion.
{{exercise_number}}. Use matches to make the following figure, then move
a) one match;
b) two matches;
c) three matches;
d) four matches to make the equality true.
b) two matches;
c) three matches;
d) four matches to make the equality true.
