①16和24
②51和68
③42和35
13.6+6.44= 1- = 0.48×2.5= 3.15÷3= + =
2.54-0.4= 5.3+7= 9÷14= 0.32= 1.25×0.8÷1.25×0.8=
◯1 ◯1 ◯ ◯
◯ ◯3 ◯10 ◯
8和9 4和8 6和10 8和14
①1042-384÷16×13
②4.56+40.5÷3
③( )
④0.8×3.6-0.8×0.6
⑤6.4×9+6.4
⑥( ) ( )