Mass + reason - practice problems - page 3 of 5
Number of problems found: 84
- Endless lego set
The endless lego set contains only 6, 9, and 20-kilogram blocks that can no longer be polished or broken. The workers took them to the gym and immediately started building different buildings. And, of course, they wrote down how much the building weighed. - Shipments 5620
If you know that a quarter of a mail order and 300 grams weigh the same as the whole shipment, then two such shipments weigh how many grams? - One-quarter 5440
They delivered goods to four stores. First, they collected one-third of the shipment, second only two-thirds of what happened in the first. In the third, one-quarter of the rest, and the fourth, the remaining 240 kg. How much did they make at each store? - Force meter
We put the statuette on the force meter. The force meter showed a value of 25 N. Then we placed the statuette on the force meter, completely immersed in the water. The force meter showed a value of 17 N. What is the volume of the statuette?
- Baker
The baker needs 10 kg of flour to make 12 kg of dough. How much flour does he need to make a 100 kg dough? - Sea water
One tonne of seawater contains 25 kg of salt. How many tonnes of seawater needs to be evaporated to obtain 1 tonne of salt? - Weighs 4877
A + B weighs 75 kg, B + C weighs 83 kg, C + D weighs 92 kg. How much does A + D weigh? - Bags
The first bag weighs 18 kg, the second bag is one-third lighter than the first, and the third bag has three times less than the weight of all three bags. Determine their weights. - Potatoes 6
The farmer brought potatoes to the market. In the first hour, he sold two-fifths of the potatoes, in the second hour, he sold five-sixth of the remaining potatoes, and in the third hour, he had sold the last 40kg of potatoes. How many kilograms of potatoe
- The farmer
The farmer brought potatoes to the market. In the first hour, he sold two-fifths of the potatoes brought in. He sold five-sixths of the remaining potatoes in the second hour, and in the third hour, he sold the last 40 kg of potatoes. 1. Express a fraction - Mushrooms
Fresh mushrooms contain 90% water, dried only 12%. How many kilograms of fresh mushrooms are needed for 5kg dried? - Bag
Nelly found an interesting point. An empty bag weighs 4 kg less than the full. An empty bag is five times easier than a full. How many kg weigh things in this bag? - Potatoes 3346
2/5 q of potatoes were sold in the first hour, 5/6 q in the second hour, and 40 kg in the third hour. How many kilograms of potatoes were in total? - Measuring 3164
Simon boasted that he had taken a corked quad measuring 0.5 m x 0.5 m x 1.2 m. Is it possible if we know that 1m cubic cork weighs 300 kg and children from 10 to 15 years can carry a maximum of 5 kg load?
- Vegetables 2866
In the store, they had 5 times more cucumbers than carrots, which they had 9 kg. They had 5 times less parsley than cucumber, 7 times more onion than parsley, 27 kilograms less garlic than garlic than onion, and 9 times less broccoli than garlic. How many - Originally 2859
The farmer expected to harvest ten times more corn than he sowed. After the harvest, he had 20,600 kg of corn in the granary, 1,500 kg more than he expected. How much corn did he originally see? - Cows
Twenty cows have food for 60 days. We reduce the dose to two-thirds for 18 cows. How many days will it feed? - Bricks II
3/4 bricks weigh 6 kg and 2/3 bricks. How weighs one whole brick? - Nine balls
Imagine that you have exactly the same appearance as nine balls, of which one has a greater mass than the other. You have isosceles weights. Post a procedure as you would using weights to discover heavier balls. How many measurements at least do you have
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