My son is in the first grade. i did not understand what the teacher is asking him to do. does he have to answer the addition questions only? can somebody explain what he has to do. you

7 and 9

I believe the teacher is doing add on 2

that is 5 + 2 = 7

then 7 + 2 =9 → 9 + 2 = 11 → 11 + 2 = 13 etc.

This also develops pattern recognition

I am only surmising - hope it helps you and your son.

rectangle: 9 1/8 x 4 1/9 = 37 37/72in

parallelogram: b times h= 10.3 x 6.2 = 63.86

trapezoid: a+b/2 times h= 42.5

volume of prism: l times w times h= 36

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m