7dam+7m+7dm=?dm 8hm-7dam-8m=?m 6dam+4m-9dm=?dm

2 câu trả lời

7dam+7m+7dm=777dm

8hm-7dam-8m=722m

6dam+4m-9dm=631dm

Đáp án:

$7dam+7m+7dm=700dm+70dm+7dm=770dm$

$8hm-7dam-8m=800m-70m-8m=722m$

$6dam+4m-9dm=600dm+40dm-9dm=631dm$