Simple operation process of 1111 times 9999 emergency

Simple operation process of 1111 times 9999 emergency

1111*（10000-1）＝11110000-1111＝11108889

0.9999×0.7+0.1111×2.7=______ ．

0.9999 × 0.7 + 0.1111 × 2.7, = (0.1111 × 9) × 0.7 + 0.1111 × 2.7, = 0.1111 × 6.3 + 0.1111 × 2.7, = 0.1111 × (6.3 + 2.7), = 0.1111 × 9, = 0.9999

Simple calculation of 9999 multiplied by 8888 divided by 1111
19 by 27 plus 190 by 4 plus 19 by 33

9999*（8888/1111)
=9999*8
=10000*8-8
=79992

(1) Simple operation of 5 / 6 × 8 / 1 + 1 / 6 × 8 / 1 (2) 45 × (11 / 15-4 / 9)

(3) 3 / 8-1 / 15 × 3 / 8
=3/8×(1-1/15)
=3/8×14
=21/4
(4) 2 / 5 × 4 / 3 × 8 / 5
=5/5×2/8×3/4
=1/4×3/4
=3/16

X + 6 of x = 1.4 simple operation with process 4.75-8 and 7 of 5 + 45.75-11 and 7 of 4
X + 6 / 6 x = 1.4 simple operation with process
Simple operation of 4.75-8 and 5 / 7 + 45.75-11 and 4 / 7

X + 6 / 6 x = 1.4
7/6x=1.4
x=1.4÷7/6
x=1.2
4.75-8 5 / 7 + 45.75-11 4 / 7
=(4.75 + 45.75) - (8 + 5 / 7 + 11 + 4 / 7)
=51 and 1 / 2-20 and 2 / 7
=31 and 3 / 14
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How easy is 2.34 * 11-107 * 0.22?

2.34*11-107*0.22 =2.34*11-10.7*22 =2.34*11-2.14*11 =11*(2.34-2.14) =11*0.2 =2.2

22+34×2＝

90

Calculation: [2 minus (11.9 minus 8.4 * Four Thirds)] / 3

[2 minus (11.9 minus 8.4 * Four Thirds)] / 3
=[2-(11.9-11.2)]/3
=(2-11.9+11.2)/3
=1.3/3
=13/30

39 times 23 / 38

39 times 23 / 38
=（38+1）×（23/38）
=38×23/38+23/38
=23 and 23 / 38

9 and twenty-four twenty-three times minus nine

9 and 24 / 23 × (- 9)
=(10+1/23)×(-9)
=-90-9/23
=90 and 9 / 23