Divide by 5
Divide by 5 by doubling, then dropping a zero.
130 ÷ 5 = 26
5 is half of 10, so dividing by 5 is doubling, then dividing by 10.
Double: 130 × 2 = 260. Then a place-value shift: 260 ÷ 10 = 26.
Your turn
Three to try in your head — tap what you get.
810 ÷ 5
445 ÷ 5
355 ÷ 5
All 36 shortcuts: the Magic Tricks library.