take 1000 and add 40 to itnow add another 1000now add 30now add another 1000now add 20add another 1000finally, add 10what's the totaland no calculators!! XPwell done everyone who got 4100!!
the part that says "now add 20" makes you think you have 3900 as opposed to 3090. The secret is to just count the 1000's first. It's easier that way anyway.answer: 4,100