When we think of monkeys, we picture long-armed animals swinging through the trees, but this guy can’t do that so easily. The pygmy marmoset is only about 5 inches long and weighs less than half a pound! It’s the smallest type of monkey in the world. Meanwhile, his far-off cousin, the mandrill, is the *biggest* type of monkey, weighing in at about 75 pounds. That might be bigger than you are…and definitely too big to wrap around your finger.

*Wee ones:* If you have a teeny marmoset hanging on each finger of your right hand, how many monkeys are you holding?

*Little kids:* If a marmoset is only 5 inches tall and a banana is 8 inches tall, how high above his head does he have to reach to grab the tip? *Bonus:* Who weighs more, a 75-pound grown-up mandrill or a 57-pound human kid?

*Big kids:* A grown-up marmoset weighs about 4 ounces. How many marmosets would have to pile up to match a pound of bananas? (*Reminder if needed:* A pound equals 16 ounces.) *Bonus:* If a mandrill can climb a tree in 4 seconds and the pygmy marmoset takes 100 times as long, how long would the teensy monkey take, in minutes and seconds? (*Another reminder if needed:* A minute has 60 seconds.)

__Answers:__

*Wee ones:* 5 tiny monkeys.

*Little kids:* 3 inches. *Bonus:* The mandrill weighs more.

*Big kids:* 4 marmosets. *Bonus:* 6 minutes 40 seconds, since it takes 400 seconds.