Question

1. The students in three third-grade classes recordedthe lengths of their shoes to the nearest centimeter.The data are in the tally table. How many more shoes were 18 or 22 centimeters long combined than 20 centimeters long ? Need to do the whole page steps by step.

Answer 1

Notice that the number of shoes that were 18 cm or 22cm we have to add the ones that correspond to the girls and those that correspond to the boys, according to the tally table:

`6+4+9+7=26.`

Now, to find the number of shoes that were 20 cm long, we add:

`8+9=17.`

To know how many more shoes were 18 and 22 cm long combined than 20 cm long we have to compute the difference between the shoes that were shoes that were 18 or 22 cm long and the 20 cm, the difference is the following subtraction:

`26-17=9.`

So, 9 more shoes were 18 or 22 cm long than 20 cm long.

Answer:

First sum:

`6+4+9+7=26.`

Second sum:

`8+9=17.`

Subtraction:

`26-17=9.`

So, 9 more shoes were 18 or 22 cm long than 20 cm long.