小学四年级递归方程计算

340÷5+340÷5

=68+68

=136

2.

55×101-55+16×25

=55×(100+1)-55+400

=5500+55-55+400

=5900

3.

8421-277-623+579

=8421+579-(277+623)

=9000-900

=8100

4.

(364-456)-(544-636)

=364-456-544+636

=364+636-(456+544)

=1000-1000

=0

5.

62×4+44×5+5×18

=62×4+5×(44+18)

=62×4+5×62

=62(4+5)

=62*9

=558

6.

6200÷124

=50

7.

(7500÷15)÷(25×2)

=500÷50

=10

8.

3400-62×34-38×20-38×14

=3400-62×34-38(20+14)

=3400-62×34-38×34

=3400-34(62+38)

=3400-34*100

=3400-3400

=0