Question

áp dụng tính chất thực hiện phép tính sau 1 cách hợp lí nhất : 132 . 9 + 132

48.17+48.3

45.48-90.24+145

754.75-2262.25+4560

1050:15-350:5+176

Answer 1

\(132.9+132=132.\left(9+1\right)=132.10=1320.\)

\(48.17+48.3=48.\left(17+3\right)=48.20=960\)

\(45.48-90.24+145=45.48-45.2.24+145=45.\left(48-2.24\right)+145\)=45.0+145=145

Answer 2

132 . 9 + 132 = 132 . 9 + 132 . 1 = 132 . (9 + 1) = 132 . 10 = 1320

48 . 17 + 48 . 3 = 48 . (17 + 3) = 48 . 20 = 960

45 . 48 - 90 . 24 + 145 = 45 . 48 - 45 . 2 . 24 + 145 = 45 . (48 - 2 . 24) + 145 = 45 . (48 - 48) + 145 = 45 . 0 + 145 = 0 + 145 = 145

754 . 75 - 2262 . 25 + 4560 = 754 . 75 - 754 . 3 . 25 + 4560 = 754 . (75 - 3 . 25) + 4560 = 754 . (75 - 75) + 4560 = 754 . 0 + 4560 = 4560

1050 : 15 - 350 : 5 + 176 = 70 - 70 + 176 = 0 + 176 = 176

Answer 3

132.9+132=132.(9+1)=132.10=1320

48.17+48.3=48.(17+3)=48.20=960

754.75-2262.25+4560=754.25.3-2262.25+4560=25.(2262-2262)+4560=0+4560=4560

1050:15-350:5+176= 35.30:15-35.10:5+176=35.(30:15-10:5)+176=35.(2-2)+176=0+176=176