问题
填空题
32÷3×12=______
10+12+14+…+24+26=______.
答案
(1)32÷3×12,
=32×(12÷3),
=32×4,
=128;
(2)10+12+14+…+24+26,
=(10+26)×9÷2,
=36×9÷2,
=162.
32÷3×12=______
10+12+14+…+24+26=______.
(1)32÷3×12,
=32×(12÷3),
=32×4,
=128;
(2)10+12+14+…+24+26,
=(10+26)×9÷2,
=36×9÷2,
=162.