(1234 + 2341 + 3421 + 4123 △ 1 + 2 + 3 + 4 + 5)

(1234 + 2341 + 3421 + 4123 △ 1 + 2 + 3 + 4 + 5)

(1234+2341+3421+4123）÷(1+2+3+4+5)
=1111×（1+2+3+4）÷15
=11110÷15
=2222/3

Simple operation of 1234 + 5678 + 8766 + 4322

1234+5678+8766+4322
=(1234+8766)+(5678+4322)
=10000+10000
=20000

Simple operation of 1234 + 3142 + 4321 + 24134

If it's 1234 + 3142 + 4321 + 24134 = 1000 × (1 + 2 + 3 + 4) + 100 × (1 + 2 + 3 + 4) + 10 × (1 + 2 + 3 + 4) + 1 × (1 + 2 + 3 + 4) = (1000 + 100 + 10 + 1) × (1 + 2 + 3 + 4) = 1111 × 10 = 11110

12345 quadratic - 12344 times 12346

The original formula = 12345 & # 178; - (12345-1) (12345 + 1)
=12345²-(12345²-1)
=12345²-12345²+1
=1
(12345-1)(12345+1)=12345²-1
Using the square difference formula

How to calculate "333 × 23 + 111 × 31"?
What law of multiplication is used?

333×23＋111×31
=111×3×23+111×31
=111×69+111×31
=111 × (69 + 31) (Law of distribution)
=111×100
=11100

125 × 8 ÷ 125 × 8 =? (simple calculation ~)

=125÷125×8×8
=1×8×8
=64

Simple calculation of 125 ÷ (20 ÷ 8)

8 out of 20 out of 125

Simple calculation of 8.8 × 125 △ 11

8.8/11*125=8*125=1000

2000-1+9*111*999

2000-1+9*111*999
=1000+999+999*999
=1000+999(1+999)
=1000+999*1000
=1000(1+999)
=1000*1000
=1000000

2000-1 + 9 * 111 * 999 =? (simple)

2000-1+9*111*999
=1000+999+999*999
=1000+999(1+999)
=1000+999*1000
=1000(1+999)
=1000*1000
=1000000