直接写得数 + =

1. (2021五下·南山期中) 直接写得数
$\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

$\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ × $\text{[math]}$ = $\text{[math]}$ × $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ =

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1. (2021五下·南山期中) 直接写得数 + = - = + = + = - = × = × = - =