问题 解答题
用合理的方法计算.(共9道)
68+176+232+82457×99(3432÷33-24)÷16
125×45-125×37(25+4)×425×32×125
7100-137-263+3004800÷(48×2)51×34+49×34.
答案

(1)68+176+232+824

=(68+232)+(176+824)

=300+1000

=1300

(2)57×99

=57×(100-1)

=57×100-57

=5700-57

=5643

(3)(3432÷33-24)÷16

=(104-24)÷16

=80÷16

=5

(4)125×45-125×37

=125×(45-37)

=125×8

=1000

(5)(25+4)×4

=25×4+4×4

=100+16

=116

(6)25×32×125

=(25×4)×(8×125)

=100×1000

=100000

(7)7100-137-263+300

=(7100+300)-(137+263)

=7400-400

=7000

(8)4800÷(48×2)

=4800÷48÷2

=100÷2

=50

(9)51×34+49×34

=(51+49)×34

=100×34

=3400

判断题
判断题