Natural numbers - practice for 12 year olds - page 6 of 27
Number of problems found: 527
- Passengers 45501
During the rescue of the sinking ship, the passengers were divided into three boats in a ratio of 3:4:5. There were 15 passengers in the first boat. How many passengers were rescued together? - Population 2909
The world's population is growing by 94,867,200 each year. How much is it a) month, b) day, c) hour, d) minute? - According 7038
When students are ranked according to height, Katka is 12th Front and 17th Back. How many children are in the class? - 5 2/5
5 2/5 hours a week mathematics, 3 3/4 hours a week Natural sciences, 4 3/8 hours a week Technology. How many hours does he spend on social sciences if he spends 17 1/2 hours a week on the four subjects? - Following 31401
The two natural numbers are in the ratio of 3:13, and we will denote their sum. Which of the following values cannot its sum be? a) 64 b) 96 c) 112 d) 39 - Statements 17733
There are 24 students in the class, and 5/8 of them are girls. Which of the following statements is true: And there are 15 boys in the class, B there are more boys than girls in the class, There are 9 boys and 15 girls in C's class - Aristotle 27401
Aristotle was born in 384 BC and lived to be 62 years old. In what year did he die? Plato lived to be 81 and died in 348 BC. What year was he born? - Games
Jack and Paul decided to play chess against each other. They bet ten pesos on each game they played. Jack won three bets, and Paul won fifty pesos. How many games did they play? - Mathematics 83190
The number of students studying teacher studies in mathematics has decreased in the last twenty years in a ratio of 2:10. How many students are studying teacher studies now when twenty years ago there were 50? - Ember
Ember spent $144 on her birthday party for 18 guests. If the cost is at the same rate, how many guests will there be if she pays $176? - Each year
Each year, Mr. Baumann purchases enough paper for his 16 students. If each student uses 3/4 packs of paper, how many packs will he need to buy? Answer as a mixed number or as a whole number. - Two boxes 2
The students filled two boxes with 5-peso coins. Box A has 300 5-peso coins, and Box B has 450 coins. In what way is the volume of box A lesser or smaller than the volume of box B? Explain your answer. - The temporary
The temporary workers collected 358 kg of apples. They filled them into 8 kg boxes. How many boxes did they fill? Is there a box left unfilled? How many boxes did they need together? - The cost 2
The cost of 5 apples is $3.45, and 5 oranges are $1.23. If Rachel buys one apple and one orange, then how much must she pay? - Marbles 82974
The bag has 5 red, 7 white, 10 yellow, and 6 black balls. At least how many marbles must be drawn from the bag to ensure that there will be 3 yellow ones among the drawn balls? - Sophomores
There are 3200 students at lake high school, and 3/8 of these are sophomores. If 3/5 of the sophomores favor the school forming a crew team and 7/10 of the remaining students (not sophomores) are in favor of forming a crew team, how many students are oppo - Shirts
In a classroom,1/6 of the students wear blue shirts, and 2/3 wear white shirts. There are 18 students in the school. How many students are wearing shirts other than blue shirts or white shirts? - Indistinguishable 81236
There are 32 red socks and 32 blue socks in a drawer. The left and right socks are indistinguishable. You pull your socks out of the drawer in the dark. How many do you have to take out to make sure you have a pair when you look at them? - Transferred 80359
There were 10 apples in the bowl. There were 35 apples in the bucket. Ivan transferred 15 apples from the bucket to the bowl. Then Zora took 4 apples from the bowl. Mom took 2/3 of the remaining apples in the bowl for the pie. How many apples are left in - Regularly 45851
Each of the three players draws 3 top cards from the deck of 54 cards and returns one card to the deck below. The first, second, and third players alternate regularly. In which round does the first player draw the card he got rid of in the first round?
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