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Find the fourth grade mathematical equation. The more, the better.
Fourth grade mathematical operator calculation competition

Category: Name: Result:

First, recursive equation calculation. (3 points for each question, ***54 points)

437-37×2+8 1500÷ 15- 15×4 180- 13×5+36

194+840÷7+ 160 45×6+37×3 125÷25×(45-26)

86+360÷20—57 (85+230)÷(35-20) 160+240÷30-58

1285- 125÷25×40 175×3-236÷4 ( 158+25× 14)÷4

582- 18× 1 1 250×8-460÷ 10 2 1×(230— 192÷4)

550-25× 12+880 (68-28)×( 12+28) 400+6 12÷ 12×4

Second, use a simple method to calculate. (Be careful! ) (3 points for each question, ***72 points)

56×208+56×92 678+678×99 103× 12

76+82+ 1 18+ 124 489+665+2 1 1 76×62+62× 124

39×28-39×8 620-204- 1 16 45× 199+45

25×204 125×88 125× 15×8×2

40 1×75 ( 125+7)×8 240÷ 16÷5

420÷ 15÷4 982-527-73 653-65-35

250× 13×4 8×6× 125 125×24

25×44 3 12×4+ 188×4 592× 127