Question

used addition properties and
strategies to find the sum 74+35+16+45=

Answer 1

74 + 35 + 16 + 45 =

= 74 + 16 + 35 + 45

= 70 + 4 + 10 + 6 + 30 + 5 + 40 + 5

= 70 + 10 + 4 + 6 + 30 + 40 + 5 + 5

= 80 + 10 + 70 + 10

= 80 + 10 + 10 + 70

= 100 + 70

= 170