Algebra - practice for 9 year olds - page 2 of 4
Number of problems found: 75
- Glasses
Imagine a set of students in your class (number of students: 15) who wears glasses. How many minimum and maximum elements may contain this set? - Clotheslines
Mommy needs six clotheslines 360 cm long. Clotheslines are sold in the length of eight meters. How many of these clotheslines must buy mom if any does not want to be connected? How much does mommy pay for the clotheslines when one piece costs 24kč? - Handmade baskets
The worker knits the baskets, which are then sold in the market. He made seven baskets on Monday, one more each day than the previous day. How many times more baskets did he make untill the following Monday evening compared to the first day when he did no - Thinking 4586
I'm thinking of a number that doesn't belong to the group. Please find it, justify the choice, and divide it by 9. 36,54,56,80,72,64,42,18,24,32,90,48,28,99.
- Divide
Divide the substance 110 cm long into two parts so that the first part is 10 cm longer than the second part, and one part will be ten times longer than the second portion. How long will the parts be? - Expeditions 6119
There are 99 athletes on the American team. There were 35 more athletes in the Japanese expedition than in the American one. There is an eighth less in the Czech expedition than in the Japanese expedition. How many athletes are there on individual expedit - Textbooks
After the check of textbooks found that teachers should withdraw every 9-th textbook. Together 176 textbooks were withdrawn. How many textbooks were in stock before being withdrawn, and how many after withdrawal? - Number 9361
I think the number. If I divide it by four and add 7 to the share, I get 62. What number do I think? - Possible 4231
In class 3C, nine girls wear a hairpin. Eight girls wear elastic bands on their hair. However, there are only 14 girls. Is that possible?
- Sit-ups
Vojta strengthens for eight weeks. In the first week, he did five sit-ups a day. He did one more per day every week than in the previous week. How many sit-ups has Vojta made? - Increase 3952
I think the number if I increase it by four, then reduce it by 7, add nine and take 50, I get the number zero. Which number do I think? - Ten pupils
Ten pupils came to the art group. Eight pupils painted with watercolors and nine painted with ink, each painted with ink or watercolors. How many pupils painted water and ink at the same time? - Calculate 2974
Calculate and find the rule according to which the numbers follow: 600 300 900 1200 2100 3300. Write a few more numbers. - Difference 4779
What is the difference between the largest and smallest numbers, composed of only odd digits and none of the digits repeated in the numbers?
- Product 2873
Which number is five times less than the product of the numbers 15 and 7? - Water colors
The painting workshop attends ten students. Eight students painted watercolors, and nine painted with tempera colors. How many students painted watercolors and tempera at the same time? - Apples
Hanka has 5 apples more than Juro and 7 apples less than Mirka. Mirka has 19 apples. How many apples have Hanka, and how many Juro? - Nothing 4612
How often can you take 5 euros from 30 euros until you have nothing left? - Equation: 7845
Solve the equation: 3968-x = 3179
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