Add & Subtract in Scientific Notation

Daniel Math Academy · Grade 8 Math

Add & Subtract in Scientific Notation

Skill B.3 · Operations with scientific notation · ★★☆ Medium · Quarter 1

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Add or subtract. Write each answer in scientific notation.

1. 1
   $(3\times 10^4)-(8\times 10^3)=$ 
2. 2
   $(7\times 10^3)+(9.4\times 10^3)=$ 
3. 3
   $(4\times 10^7)-(6\times 10^6)=$ 
4. 4
   $(4\times 10^7)-(7\times 10^6)=$ 
5. 5
   $(5\times 10^9)+(3\times 10^9)=$ 
6. 6
   $(7\times 10^5)+(8.2\times 10^5)=$ 
7. 7
   $(7.8\times 10^4)+(8\times 10^3)=$ 
8. 8
   $(4.7\times 10^2)+(9.7\times 10^2)=$ 

Daniel Math Academy · Grade 8 Math

Answer Key

B.3 Add & Subtract in Scientific Notation · ★★☆ Medium

1. 1$2.2\times 10^4$
2. 2$1.64\times 10^4$
3. 3$3.4\times 10^7$
4. 4$3.3\times 10^7$
5. 5$8\times 10^9$
6. 6$1.52\times 10^6$
7. 7$8.6\times 10^4$
8. 8$1.44\times 10^3$