Question

Explain how you can mentally determine whether 125 multipled 0.9 is less than,greater than or equal to 125

Answer 1

Remember you can do anythng to an equaiton as long as you do it to both sides


125=125 times 1
so

note: the blank or underline represents a sign like = or < or >

125 times 0.9 ___ 125
125 times 0.9 ___ 125 times 1
divide both sides by 125
0.9 ___ 1
0.9<1
so the answer is less than