addition
10 + -5.5
4.5
2.2 - 1.5
0.7
1/2 ÷ 8/7 =?
7/16
30 x 3
90
A salesman sold twice as many pears in the afternoon than in the morning. If he sold 360 kilograms of pears that day, how many kilograms did he sell in the morning, and how many in the afternoon?
120
476.8 + 28
496.8
15 1/2 - 7 1/2
8 1/2
20.86 ÷ 2=?
10.43
2/7 x 3/14
3/49
Sophia finished 2/3 of a book. She calculated that she finished 90 more pages than she has yet to read. How long is her book?
the book is 270 pages long.
932.9 + 9.1
942
9 1/4 - 5 1/2
3 1/4
3/2 ÷ 10/7 =?
1 1/20
5/8 x 4/16
5/32
In the first year, two cows produced 8100 litres of milk. In the second year, their production increased by 15% and 10% respectively, and the total amount of milk increased to 9100 litres a year. How many litres were milked from each cow each year?
the cows produced 3800 and 4300 liters of milk the first year, and 4370 and 4370 liters of milk the second year.
367.9 + 543.7
911.6
10 1/8 - 3 1/16
113/16 or 7 1/16
0.132 ÷ 12=?
0.011
59.7 x 20
1194
A woodworker normally makes a certain number of parts in 24 days. But he was able to increase his productivity by 5 parts per day, and so he not only finished the job in only 22 days but also made 80 extra parts. How many parts does the woodworker normally make per day and how many pieces does he make in 24 days?
140 km.
1762.8 + 2808.4
5 1/4 - 3 1/2 - 1 1/6
7/12
1.86 ÷ 3 =?
0.62
19 1/3 x 13 3/6
261 or 261 /1
A bus travels from town A to town B. If the bus's speed is 50 km/hr, it will arrive in town B 42 min later than scheduled. If the bus increases its speed by 50/9 m/sec it will arrive in town B 30 min earlier than scheduled.
A) The distance between the two towns;
B) The bus's scheduled time of arrival in B;
C) The speed of the bus when it's on schedule.
60 km/hour