题目内容
将算式和得数(锁和钥匙)用线连起来

(1)20+4×5÷2,
=20+20÷2,
=20+10,
=30;
(2)250-100÷5÷4,
=250-20÷4,
=250-5,
=245;
(3)54÷(18-9)×8,
=54÷9×8,
=6×8,
=48;
(4)900÷(77-25×3),
=900÷(77-75),
=900÷2,
=450;
(5)(25+8)×(99-88),
=33×11,
=363.
连线如图:

=20+20÷2,
=20+10,
=30;
(2)250-100÷5÷4,
=250-20÷4,
=250-5,
=245;
(3)54÷(18-9)×8,
=54÷9×8,
=6×8,
=48;
(4)900÷(77-25×3),
=900÷(77-75),
=900÷2,
=450;
(5)(25+8)×(99-88),
=33×11,
=363.
连线如图:
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