A farm is growing corn in 2 fields. One of the fields has 13 full rows of corn cobs, and the other field has 16 full rows of corn cobs. If each row contains 4 corn cobs, how many corn cobs has the farm grown?

In the first field, there are 13 rows * 4 corn cobs/row =

<<13*4=52>>52 corn cobs. In the second field, there are 16 rows * 4 corn cobs/row = <<16*4=64>>64 corn cobs. So the farm has grown a total of 52 corn cobs + 64 corn cobs = <<52+64=116>>116 corn cobs. #### 116 Olga has three stripes on the side of each of her tennis shoes. Rick has one less stripe per shoe than does Olga. But Hortense has double the number of stripes on her tennis shoes as does Olga. In total, what is the combined number of stripes on all of their pairs of tennis shoes? Rick has one less than three stripes, or 3-1=2 stripes on each tennis shoe. Hortense has double the 3 stripes that Olga has, or a total of 3*2=<<3*2=6>>6 stripes per shoe. Since each of them has two tennis shoes per pair, then the total number of stripes on all of their shoes is 2*(3+2+6)=<<2*(3+2+6)=22>>22 stripes #### 22 Frank bakes two trays of cookies per day, for 6 days. Frank eats one cookie each day to make sure they taste good. Ted comes over on the sixth day and eats 4 cookies. If each tray makes 12 cookies, how many cookies are left when Ted leaves? Frank bakes 2 * 12 = <<2*12=24>>24 cookies per day. Frank bakes a total of 24 * 6 = <<24*6=144>>144 cookies. Frank eats 1 * 6 = <<1*6=6>>6 cookies. After Ted leaves, there are 144 - 6 - 4 = <<144-6-4=134>>134 #### 134 Carter is twice as tall as his 24” tall dog. Betty is 12” shorter than Carter. How tall is Betty in feet? Carter is twice as tall as 24” dog so he is 2*24 = <<2*24=48>>48” Betty is 12” shorter than Carter so Betty is 48-12 = <<48-12=36>>36” tall 12" is the same as 1 foot so Betty is 36/12 = 3 feet tall #### 3 Legoland has 5 kangaroos for each koala. If Legoland has 180 kangaroos, how many koalas and kangaroos are there altogether? For every 5 kangaroos, there is one koala, meaning for the 180 kangaroos, there are 180/5 = <<180/5=36>>36 koalas. Altogether, there are 36+180 = <<36+180=216>>216 koalas and kangaroos. #### 216 James has an old printer that crumples every seventh page and blurs the ink on every third page. If he prints 42 pages, how many are neither crumpled or blurred? First find the total number of pages that are crumpled: 42 pages / 7 = <<42/7=6>>6 pages Then find the total number of pages that are blurred: 42 pages / 3 = <<42/3=14>>14 pages Then find the number of pages that are both blurred and crumpled by finding how many numbers are less or equal to 42 and divisible by both 3 and 7: there are two, 21 and 42. Then subtract the number of crumpled and blurred pages from the total number of pages, and add the number of pages that were double-counted because they were both blurred and crumpled: 42 pages - 6 pages - 14 pages + 2 pages = <<42-6-14+2=24>>24 pages #### 24 Camden went swimming 16 times in March and Susannah went 24 times. If the number of times they went throughout the month was divided equally among 4 weeks, how many more times a week did Susannah swim than Camden? Camden went swimming 16/4 = <<16/4=4>>4 times a week Susannah went swimming 24/4 = <<24/4=6>>6 times a week Susannah went 6 - 4 = <<6-4=2>>2 more times a week than Camden #### 2 If Lucy would give Linda $5, Lucy would have the same amount of money as Linda. If Lucy originally had $20, how much money did Linda have at the beginning? After giving $5, Lucy has $20 - $5 = $<<20-5=15>>15 left. Since Linda has $15 after receiving $5, then she had $15 - $5 = $<<15-5=10>>10 at the beginning. #### 10 Justin has a box that is 12 inches in height. The length of the box is 3 times its height and 4 times its width. What is the volume of the box? The length of the box is 3 x the height of 12 inches = <<3*12=36>>36 inches. The width of the box is 36 inches / 4 = <<36/4=9>>9 inches. The volume of the box is the height of 12 inches x the length of 36 inches x the width of 9 inches = <<12*36*9=3888>>3,888 cubic inches. #### 3,888 Caleb and Cynthia are filling up their inflatable pool with water using buckets. They fill their buckets at the spigot and carry them to the pool. Caleb can add 7 gallons from his bucket and Cynthia can add 8 gallons from her bucket each trip. It will take 105 gallons to fill the pool. How many trips will it take for Caleb and Cynthia to fill the pool with their buckets? Each trip, they add Caleb’s 7 gallons + Cynthia’s 8 gallons = <<7+8=15>>15 gallons. Since they are adding 15 gallons every trip, to fill the 105-gallon pool, it would take 105 / 15 = <<105/15=7>>7 trips. #### 7