Addition - practice for 12 year olds - page 25 of 30
Number of problems found: 581
- Numbers 7797
Find out which numbers are seven from the number 27 on the number axis. Write their sum. - Pages counting
There are pages numbered 2 to 104 in the book. How many digits have to be printed to number the pages? - Which
Which decimals, when subtracted, equal 3.89: a - b = 3.89 - Laboratory
Mang Elio went to his laboratory at 7:00 a.m. and recorded the temperature as 11.07°C. At lunchtime, the temperature rose by 27.9°C but dropped by 8.05°C at 5:00 p.m. What was the temperature at 5:00 p.m.?
- Simultaneously 7748
The monitor screen is blank. Four new wheels appear on the screen every seven seconds when the beep sounds. On the contrary, three wheels disappear from the screen every eleven seconds. If both actions should take place simultaneously, the number of circl - Yellows 7650
Stano got a box of dice. Half of them were brown and blue in color, and the others were red, yellow, and green. There were 12 more reds than yellows, 19 more reds, and 5 more greens than yellows. How many cubes were in the box? - Noontime
In the morning temperature was 110°F. By noontime, it has gone up by 15°F. What was the noon temperature? (Give your answer in °F) - Consecutive 7551
Determine the sum of three consecutive natural numbers such that the sum of the first and third numbers is 368. - Consumption 7538
A package of one cheese weighs 1.80 kg. From the previous day, 0.80 kg remained. Today I have 0.53 left in the box. What was the consumption of cheese?
- Smallest 7478
The hat has 14 grays, eight white, and six mice. What is the smallest number of mice we have to pull out of our hats to ensure we have at least one mouse of each color? - Food weight
Stacie is a resident at the medical facility where you work. You are asked to chart the amount of solid food that she consumes. For the noon meal today, she ate 1/2 of a 3-ounce serving of meatloaf, 3/4 of her 3-ounce serving of mashed potatoes, and 1/3 o - Letters
ABC + DEF = GHIJ replace letters with numbers so that the sum is correct (different letters = different numbers) - The Mayflower
The Mayflower traveled for 66 days on a trip from England to America. The weather was storming for many days of their trip. If one and a half of the days at Sea were Sunny with good weather, 1/6 of the days were sunny but very windy and the other days res - Game 27
Susan wanted to play the game. In the beginning, the first says a number from 1 to 8. Then the second player adds a number from 1 to 5 and tells the sum. Again, Susan adds a number from 1-5 and says sum, etc. The winner must say the number 27. What first
- Electricity 7115
On Tuesday at 6 o'clock, the electricity supply was interrupted at 156 h. On which day (1 = Monday, ... 7 = Sunday) and at what time was the electricity supply resumed? - Tickets
On Monday, the cinema sold 33 tickets. Every next day, twice as many as the previous day. How many tickets were sold on Friday, and how many totals from Monday to Friday? - Josef 6988
Josef had three balls less than Jan. They bet ten balls, and Josef won. Who has more balls now? - Evaluate expression 2
Evaluate expression with negatives: (-3)+4+(-8)+(-6)+4+(-1) - Sum of fractions
What is the sum of 2/3+3/5?
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