First Grade Challenging Math

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1-36)  Greg's soccer team had 12 kids. 2 more kids joined the team later. Half of all the team members play piano. How many of those kids play piano?

1-37)   Fill the empty circles so that the sum of the 3 numbers on each side of the triangle is 17.

1-38) Add across and down.

1-39) Calculate

    7 + 20 + 13 =

    5 + 21 + 4 =

    3 + 8 + 9 =

   13 + 12 + 4 =