use the problem by seeing what times what equals 42. we know that 5 times 9 is 45 so Now i go to four and see how close I can get to 42 i know the closed I can get to 42 from for is 4 times 10 which is 40 so now i go to 3 and I know exactly what problen to use. here is the problem hope it helps you 3×14