Make a skipping rope needs 12m and repair a badminton net needs 30m. After dad made two skipping ropes and repaired a badminton net, there are 3m of rope left. What is the original length of this rope?
A restaurant is arranged with tables and chairs, 5 tables with 2 chairs each and 4 tables with 6 chairs each. How many chairs are there in the restaurant?
Kang Kang participated in tree planting activity since 8 year old. One tree was planted in the first year, and every year Kang Kang plants one more tree than the previous year. Now he is 18 years old. How many trees has Kang Kang planted in the past 11 years?
If yesterday was Monday, Xiao Ming made a date with friend today to go to the library five days later. What day will Xiao Ming and his friends go to the library?
The table below shows the number of different balls in the sports room, 36 basketballs, 42 ping pong and 70 badmintons. How many footballs are there in the sports room?
| Ball | Amount in the source pictogram |
|---|---|
| Basketball | 4 full symbols + 1/2 symbol (36) |
| Pingpong | 5 full symbols + 1/4 symbol (42) |
| Badminton | 8 full symbols + 3/4 symbol (70) |
| Football | 9 full symbols + 1/4 symbol |