1.2–0.26= 6× = 100× = 16×( - )=
0.51÷1.7= 0.3²= ×0= + – + =
① × ×
② × ×16
③ + + +
④5.2×3.6+3.6×4.8
⑤ × 7×12×
⑥ × ×
160克=千克 200平方米=公顷
× =