MULTIPLICATION OF FRACTIONS You know how to find the area of a rectangle. It is equal to length × breadth. If the length and breadth of a rectangle are 7 cm and 4 cm respectively, then what w
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Multiplication of a Fraction by a Fraction Farida had a 9 cm long strip of ribbon. She cut this strip into four equal parts. How did she do it? She folded the strip twice. What fraction of the tota
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DIVISION OF FRACTIONS John has a paper strip of length 6 cm. He cuts this strip in smaller strips of length 2 cm each. You know that he would get 6 ÷ 2 =3 strips. John cuts another strip
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Division of a Fraction by a Whole Number What will be ÷ 3? Based on our earlier observations we have: \(\frac{3}{4}\) ÷ 3 = \(\frac{3}{4}\
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MULTIPLICATION OF DECIMAL NUMBERS Reshma purchased 1.5kg vegetable at the rate of ₹8.50 per kg. How much money should she pay? Certainly it would be ₹ (8.50 × 1.50). Both 8.5 and 1.5 are
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Multiplication of Decimal Numbers by 10, 100 and 1000 Reshma observed that 2.3 = \(\frac{23}{10}\) whereas 2.35 = \(\frac{235}{10}\). Thus, she found that depending on the position of the decimal
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DIVISION OF DECIMAL NUMBERS Savita was preparing a design to decorate her classroom. She needed a few coloured strips of paper of length 1.9 cm each. She had a strip of coloured paper of length 9.5
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Division of a Decimal Number by a Whole Number Let us find \(\frac{6.4}{2}\). Remember we also write it as 6.4 ÷ 2. So, 6.4 ÷ 2 = \(\frac{64}{10}\) ÷ 2 = \(\frac{64}{10}\ti
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Division of a Decimal Number by another Decimal Number Let us find \(\frac{25.5}{0.5}\) i.e., 25.5 ÷ 0.5. We have \(\frac{255}{10}\div \frac{5}{10}=\frac{255}{10}\times \frac{10}{5}=51\)
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