`text{#promax123}`
Đáp án :
a) 9 x 24 x 25
= 216 x 25
= 5400
b) 12 x 125 x 54
= 1500 x 54
= 81000
c) 3 x 25 x 8 + 4 x 37 x 6 + 2 x 38 x 12
= 75 x 8 + 148 x 6 + 76 x 12
= 600 + 888 + 912
= 1488 + 912
= 2400
d) 35 x 34 + 35 x 86 + 35 x 86 + 65 x 75 + 65 x 45
= 35 x ( 34 + 86 + 86 ) + 65 x ( 75 + 45 )
= 35 x 206 + 65 x 120
= 7210 + 7800
= 15010