261,375 views
14 votes
14 votes
What is 10x10,20x90,30x30,and 40x40

User Daniela Miao
by
2.6k points

2 Answers

7 votes
7 votes

Answer:

100

1800

900

1600

Explanation:

Easy way to solve :

remove the 0's eg

20*90 -> 2*9 = 18

then add the 0's back on

1800

User Samuel Negru
by
3.5k points
26 votes
26 votes

Answer:

See below ↓↓↓↓

Explanation:

  1. 10 x 10 = 100
  2. 20 x 90 = 1800
  3. 30 x 30 = 900
  4. 40 x 40 = 1600
User NarasimhaKolla
by
2.8k points