Question

Explain how using basic facts can help you find 10x20x30x40 mentally

Answer 1

Answer:

first multiply 1 times 2 which is easy 2, then 2 times 3 which is 6, then 6 times 4

After add up the zeros and there are 4 zeros so the answer is

40000

Step-by-step explanation:

Answer 2

Answer:

multiply the first number 1*2*3*4 then add the zeros