直接写出得数 1- = + = ×2=

1. (2022五下·锦江期末) 直接写出得数
1- $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ ×2= $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ =

18× $\text{[math]}$ = $\text{[math]}$ ÷6= $\text{[math]}$ ÷ $\text{[math]}$ = a-0.4a= $\text{[math]}$ + $\text{[math]}$ + $\text{[math]}$ + $\text{[math]}$ =

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1. (2022五下·锦江期末) 直接写出得数 1- = + = ×2= + = - = 18× = ÷6= ÷ = a-0.4a= + + + =