ABSTRACT
Express the answers to questions 20 to 23 in engineering form.
20. Evaluate 5× 10−3 × 7× 108
21. Evaluate 6× 103 × 14× 10−4
2× 106
22. Evaluate 56.43× 10−3× 3× 104
8.349× 103 correct to 3 decimal places
23. Evaluate 99× 105× 6.7× 10−3
36.2× 10−4 correct to 4 significant figures
24. Evaluate 4 5
− 1 3 as a decimal, correct to 4
decimal places
25. Evaluate 2 3
− 1 6
+ 3 7 as a fraction
26. Evaluate 2 5 6
+ 15 8 as a decimal, correct to 4
significant figures
27. Evaluate 5 6 7
− 31 8 as a decimal, correct to 4
significant figures
28. Evaluate 3 4
× 4 5
− 2 3
÷ 4 9 as a fraction
29. Evaluate 8 8 9
÷ 22 3 as a mixed number
30. Evaluate 3 1 5
× 11 3
− 1 7 10
as a decimal,
correct to 3 decimal places
31. Evaluate
( 4 1 5
− 12 3
) ( 3 1 4
× 23 5
) − 2 9 as a decimal,
correct to 3 significant figures
In questions 32 to 38, evaluate correct to 4 decimal places.
