- A7.7
- B77
- C770
- D27.72
Step-by-Step Solution
Make the divisor a whole number by shifting both decimal points one place: 462 ÷ 6 = 77 kites. Shifting only the divisor gives 7.7, and multiplying instead of dividing gives 27.72.
Answer: B) 77
A ball of kite thread is 46.2 m long. Tying each kite uses 0.6 m of thread. How many kites can be tied?
Class 7Fractions and DecimalsFractions and Decimals
Key idea: Adding and subtracting unlike fractions
Step 1: find the **LCM of the denominators**. Step 2: convert each fraction to an equivalent fraction with that LCM as the new denominator. Step 3: now the fractions are 'like' — add or subtract numerators, keep denominator.
Example: 1/3 + 1/4. LCM of 3 and 4 is 12. Convert: 1/3 = 4/12, 1/4 = 3/12. Add: 4/12 + 3/12 = 7/12.
The whole job is converting once you've picked the right common denominator.
Example: 1/3 + 1/4. LCM of 3 and 4 is 12. Convert: 1/3 = 4/12, 1/4 = 3/12. Add: 4/12 + 3/12 = 7/12.
The whole job is converting once you've picked the right common denominator.
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