Toán Tính bằng cách thuận tiện nhất 69,78×75%+1/4+69,78×99 01/12/2021 By Brielle Tính bằng cách thuận tiện nhất 69,78×75%+1/4+69,78×99
@Su `69,78×75%+1/4+69,78×99` `= 69,78×3/4+1/4+ 69,78 × 99` `= 69,78 ×(3/4+99)+1/4` `= 69,78 × 99,75 +1/4` `= 6960,805` Trả lời
69,78×75%+$\frac{1}{4}$ +69,78×99 = 69,78 x $\frac{3}{4}$ + $\frac{1}{4}$ + 69,78 x 99 = 69,78 x ( $\frac{3}{4}$ + 99 ) + $\frac{1}{4}$ = 69,78 x 99,75 + $\frac{1}{4}$ = 6960,805 Trả lời
@Su
`69,78×75%+1/4+69,78×99`
`= 69,78×3/4+1/4+ 69,78 × 99`
`= 69,78 ×(3/4+99)+1/4`
`= 69,78 × 99,75 +1/4`
`= 6960,805`
69,78×75%+$\frac{1}{4}$ +69,78×99
= 69,78 x $\frac{3}{4}$ + $\frac{1}{4}$ + 69,78 x 99
= 69,78 x ( $\frac{3}{4}$ + 99 ) + $\frac{1}{4}$
= 69,78 x 99,75 + $\frac{1}{4}$
= 6960,805