Question

Tinh

a 234+78  b 546-43 c 467+674-678

Answer 1

a 234+78=312

b 546-43=503

c 467+674-678=463

Answer 2

\(234+78\)

\(=234+66+12\)

\(=300+12\)

\(=312\)

Answer 3

\(546-43\)

\(=546-46+3\)

\(=500+3\)

\(=503\)

Answer 4

\(467+674-478\)

\(=1141-678\)

\(=463\)

Answer 5

Phai tinh ca 3 phep tinh

Answer 6

Ban tinh dung roi nhung lan sau khi ban tra loi thi ban luon ca 3 dap an cung mot luc luon nhe!