Question

Use addition properties and strategies to find the sum..1.)34+62+51+46=? 2.)27+68+43=? 3.)42+36+18=? 4.)74+35+16+45=?

Answer 1

1.
$34 + 62 = 96 + 51 = 147$
$147 + 46 = 193$

2.
$27 + 68 = 95 + 43 = 138$
3.
$42 + 36 = 78 + 18 = 96$
4.
$74 + 35 = 109 + 16 = 125 + 45 =$
$= 70$