- AM × M
- BN × N
- CM × N
- DM × N × N
Step-by-Step Solution
, which is between and ; ; .
Answer: C) M × N
Points M and N are marked on the number line; each unit is split into 4 equal parts. Which product lies between M and N?
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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