21. What is 4/10 reduced to lowest term?
A. 1/5
B. 2/5
C. 3/5
D. 4/5

22 Which of the following should be considered in adding dissimilar fractions? A. Find the LCD
B. Find the GCF
C. Find the LCM
D. All of the above

23. What is the sum if 7.2 will be added to 3.25?
A. 10.45
B. 10.5
C. 42.7
D. 72.3

24. What is the product if 6.8 is multiplied by 5.3?
A. 36.04
B. 36.40
C. 12.1
D. 1.5

25. A 20L tank is to be filled with water by repeatedly pouring from a can which holds 2 1/2 L. How many pouring are needed to fill the tank?
A. 10
B. 9
C. 8
D. 7 ​