John is 1.7 m tall and ken is 1.5 m tall. what is the difference in their heights, expressed in centimeters?

0.2 cm

2 cm

20 cm

200 cm

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?