Sagot :
Answer:
1. 4/6 ÷ 2/9
4/6 × 9/2
36/12 ÷ 12/12
= 3
2. 14 ÷ 2/3
14 × 3/2
42/2 ÷ 2/2
= 21
3. 10 4/7 ÷ 25
10×7+4/7 ÷ 25
74/7 ÷ 25
74/7 × 1/25
= 74/175
4. 2 1/3 ÷ 4 2/3
2×3+1/3 ÷ 4×3+2/3
7/3 ÷ 14/3
7/3 × 3/14
21/42 ÷ 21/21
= 1/2
5. 3 3/4 ÷ 2 1/4
3×4+3/4 ÷ 2×4+1/4
15/4 ÷ 9/4
15/4 × 4/9
60/36 ÷ 12/12
= 5/3 or 1 2/3
6. 2.53 + 4.26
= 6.79
7. 16.987 - 5.342
= 11.645
8. 23.456 + 90.354 + 345.1
113.81 + 345.1
= 458.91
9. 145 + 4.562 + 38.9123
149.562 + 38.9123
= 188.4743
10. 0.2358
6.378
+ 145.9
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