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a) Make these numbers look more like decimals (e.g. [tex]$24=24.0, \quad 8=8.0$[/tex]):

1. 3
2. 74
3. 62
4. 9
5. 413
6. 14
7. 5
8. 87
9. 1000
10. 28

b) Perform the following subtractions:

1. [tex]$8.7 - 4.2$[/tex]
2. [tex]$16.3 - 11.1$[/tex]
3. [tex]$9.6 - 6.1$[/tex]
4. [tex]$25.8 - 14.8$[/tex]
5. [tex]$7.6 - 2.3$[/tex]
6. [tex]$14.2 - 7.8$[/tex]
7. [tex]$0.37 - 0.29$[/tex]
8. [tex]$5.38 - 3.64$[/tex]
9. [tex]$21.3 - 2.8$[/tex]
10. [tex]$6.23 - 1.8$[/tex]
11. [tex]$17.51 - 4.9$[/tex]
12. [tex]$0.012 - 0.005$[/tex]
13. [tex]$8.25 - 5$[/tex]
14. [tex]$3.805 - 1.062$[/tex]
15. [tex]$20.0 - 3.8$[/tex]

Remember to fill in spaces with noughts if necessary:

1. [tex]$15.2 - 8.4$[/tex]
2. [tex]$4.3 - 1.9$[/tex]
3. [tex]$6.7 - 1.46$[/tex]
4. [tex]$32.45 - 15.7$[/tex]
5. [tex]$28 - 4.6$[/tex]
6. [tex]$6.19 - 6.045$[/tex]
7. [tex]$9.07 - 7.8$[/tex]
8. [tex]$42.5 - 7.36$[/tex]
9. [tex]$0.306 - 0.04$[/tex]
10. [tex]$1.5 - 0.75$[/tex]
11. [tex]$62 - 14.32$[/tex]
12. [tex]$5.482 - 3.917$[/tex]
13. [tex]$22.2 - 4.56$[/tex]
14. [tex]$10.03 - 8.8$[/tex]
15. [tex]$0.9 - 0.07$[/tex]


Sagot :

Sure! Let's convert the given integers into float format and then perform the specified subtraction operations step by step.

a) Conversion of integers into float format:

1) 3 → 3.0
3) 62 → 62.0
5) 413 → 413.0
7) 5 → 5.0
9) 1000 → 1000.0
2) 74 → 74.0
4) 9 → 9.0
6) 14 → 14.0
8) 87 → 87.0
10) 28 → 28.0

b) Perform the subtraction operations:

1) [tex]\(8.7 - 4.2 = 4.5\)[/tex]
6) [tex]\(14.2 - 7.8 = 6.4\)[/tex]
11) [tex]\(17.51 - 4.9 = 12.61\)[/tex]

2) [tex]\(16.3 - 11.1 = 5.2\)[/tex]
7) [tex]\(0.37 - 0.29 = 0.08\)[/tex]
12) [tex]\(0.012 - 0.005 = 0.007\)[/tex]

3) [tex]\(9.6 - 6.1 = 3.5\)[/tex]
8) [tex]\(5.38 - 3.64 = 1.74\)[/tex]
13) [tex]\(8.25 - 5.0 = 3.25\)[/tex]

4) [tex]\(25.8 - 14.8 = 11.0\)[/tex]
9) [tex]\(21.3 - 2.8 = 18.5\)[/tex]
14) [tex]\(3.805 - 1.062 = 2.743\)[/tex]

5) [tex]\(7.6 - 2.3 = 5.3\)[/tex]
10) [tex]\(6.23 - 1.8 = 4.43\)[/tex]
15) [tex]\(20.0 - 3.8 = 16.2\)[/tex]

1) [tex]\(15.2 - 8.4 = 6.8\)[/tex]
6) [tex]\(6.19 - 6.045 = 0.145\)[/tex]
11) [tex]\(62.0 - 14.32 = 47.68\)[/tex]

2) [tex]\(4.3 - 1.9 = 2.4\)[/tex]
7) [tex]\(9.07 - 7.8 = 1.27\)[/tex]
12) [tex]\(5.482 - 3.917 = 1.565\)[/tex]

3) [tex]\(6.7 - 1.46 = 5.24\)[/tex]
8) [tex]\(42.5 - 7.36 = 35.14\)[/tex]
13) [tex]\(22.2 - 4.56 = 17.64\)[/tex]

4) [tex]\(32.45 - 15.7 = 16.75\)[/tex]
9) [tex]\(0.306 - 0.04 = 0.266\)[/tex]
14) [tex]\(10.03 - 8.8 = 1.23\)[/tex]

5) [tex]\(28.0 - 4.6 = 23.4\)[/tex]
10) [tex]\(1.5 - 0.75 = 0.75\)[/tex]
15) [tex]\(0.9 - 0.07 = 0.83\)[/tex]

Here are the converted float numbers and the results of the subtraction operations step-by-step.