Question

bài 9 tính tổng sau đây một cách hợp lý nhất

a) 67 + 135 + 33                         b) 277 + 113 + 323 + 87

Answer 1

a) 67 + 135 + 33 = (67 + 33) + 135= 100 + 135 = 235 b) 277 + 113 + 323 + 87=(277 + 323) + (113 + 87)=600 +200 = 800

Answer 2

a) \(67+135+33=\left(67+33\right)+135\)

\(=100+135=235\)

b) \(277+113+323+87=\left(277+323\right)+\left(113+87\right)\)

\(=600+200=800\)

Nguyễn Ngọc Anh

Answer 3

a) 67+135+33=(67+33)+135=100+135=235

Answer 4

a) 67 + 135 + 33 = ( 67 + 33 ) + 135 = 100 + 135 = 235 b) 277 + 113 + 323 + 87 = ( 277 + 323 ) + ( 113 + 87 ) = 600 + 200 = 800

Answer 5

a)67 + 135 + 33

=(67+33)+135

=100+135

=235

b) 277 + 113 + 323 + 87

=(277+323)+(113+87)

=600+200=800

Answer 6

phần b bn cx làm như zây nha

Answer 7

a,67+135+33=(67+33)+135=100+135=235 b, 277+113+323 +87 =(277+323)+(113+87) =600+200=800

Answer 8

a.67+135+33

=(67+33)+135

=100+135

=235

b.277+113+323+87

=(277+323)+(113+87)

=600+200

=800

Answer 9

67+135+33=67+33+135eafw

Answer 10

a) 277 + 113 + 323 + 87 = (67 + 33) + 315 = 100 + 35 = 233

Answer 11

1326+538-326+62

Answer 12

67 + 279 + 133 + 321