Addition & Subtraction
6,780 + 220
7000
8 x 8
64
8/8
1
A person went to the store and bought 500 apples and 2 lemons. While returning home, half of his apples were eaten by his dog. How many total apples and lemons will he have when he returned home?
250 Apples and 2 Lemons
(8x3) + 2
26
2,999 + 1,001
4000
45 × 4
180
64/8
8
A hospital waiting area had 20 patients waiting for their appointment. Every 20 minutes, a patient enters for their appointment. After how many minutes will there be no more patients in the waiting area?
20 x 20 = 400
(6x4) + 24
48
4,500 − 1,750
2750
19 × 8
152
600/40
15
One day, a person decided to purchase as many watermelons as his car could handle. Each watermelon weighs 3 kilograms. His car could handle up to 990kg. How many watermelons could his car theoretically handle?
990/3 = 330 watermelons
18
8,000 − 5,555
2445
6.25 × 4 x 27
625
1250/5000
0.25
Under heavy rain, a house fell down from the weight of the water. Every second 120 grams of water were put on top of the house. The house fell down after 1200kg of water was put on the house. After how many seconds did the house fall down?
10000 Seconds
"The father of Algebra"
Muhammad ibn Musa al-Khwarizmi is known as the "Father of Algebra"
9,004 − 3,678 + 249
5575
17.2 x 9 x 2
309.6
889/293 (Round)
3
On a cargo ship traveling from Kuwait to China during 4 days, two quarters of all oil barrels leaked a tenth of their oil per day into the ocean. There was 4000kg of oil in the start, how many kg of oil was left at the end of the trip?
4000 - 4000(2/4) = 2000kg
2000 - 4(2000(1/10)) = 1200kg
800kg was lost during the trip, so there was 3200kg of oil when the cargo ship reached China
((64/8) x (160/2)) + 24 - 6.8
657.2