a= (45×4) × (10^12 ×10^-26)
= 180× 10^-14
b= 2 500 000 000× 2 500 000 000
c= 36÷3=12
10^15 +^17 = 10^32
=> = 12 × 10^32
d=36×25=900
900÷4,5= 200
(10^-6)×(10^5)=10^-1
(10^-1)÷(10^-4) = 10^1
=> = 200÷ (10^-1)
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a= (45×4) × (10^12 ×10^-26)
= 180× 10^-14
b= 2 500 000 000× 2 500 000 000
c= 36÷3=12
10^15 +^17 = 10^32
=> = 12 × 10^32
d=36×25=900
900÷4,5= 200
(10^-6)×(10^5)=10^-1
(10^-1)÷(10^-4) = 10^1
=> = 200÷ (10^-1)