A number has the digit '2' in the ten-thousands place. If you multiply..
A number has the digit '2' in the ten-thousands place. If you multiply it by 100, which place will the digit '2' take in the product? => Hundred thousands place or Milli..
Approximation
Approximation - We know that the digits of a number, one by one in order from left to right decrease in value rapidly. Let us illustrate it by examples. Mass of a gold ornament is 23.473 g. Round off to (i) two decimal places, (ii) one decimal place. 23.473 g..
Approximation - We know that the digits of a number, one by one in order from left to right decrease in value rapidly. Let us illustrate it by examples. Mass of a gold ornament is 23.473 g. Round off to (i) two decimal places, (ii) one decimal place. 23.473 g..Significant Figures Introduction
Introduction - We use specific number of digits to denote an exact value of a number for required accuracy. The digits used for such a purpose are called significant figures. Suppose a measurement is recorded as 0.6204 cm. It means that the measurement was ma..
Rational Numbers
The rational numbers can be expressed as terminating or recurring decimals. Decimal fraction has denominator as 10 or a power of 10. A recurring decimal is denoted by placing dots or a bar over recurring digits..
Multiplication of Matrices
Multiplication of Matrices - Let us consider the sales done by a school canteen for two successive days. Monday 25 cokes 12 cakes Tuesday 40 cokes 7 cakes Each coke costs $ 5 and cake costs $ 10. The sales can be expressed as a 2 x 2 matrix and the price as a 2..
Multiplication of Matrices - Let us consider the sales done by a school canteen for two successive days. Monday 25 cokes 12 cakes Tuesday 40 cokes 7 cakes Each coke costs $ 5 and cake costs $ 10. The sales can be expressed as a 2 x 2 matrix and the price as a 2..Matrices Introduction
Introduction - Let us consider the marks obtained by four students in Physics, Chemistry and Biology for the first unit test. We have represented the data in rows and columns. (i) Rows show the marks obtained by each student. (ii) The columns show the marks in Physics, Chemistry, Biology obtained b..
Introduction - Let us consider the marks obtained by four students in Physics, Chemistry and Biology for the first unit test. We have represented the data in rows and columns. (i) Rows show the marks obtained by each student. (ii) The columns show the marks in Physics, Chemistry, Biology obtained b..What is the digit in the tens place in the number? (100 × 5) + (..
What is the digit in the tens place in the number? (100 × 5) + (20 × 1) + (3 × 3) => 2 or 0 or 10 or 20..
In which place is the digit 2 in the number 24?
In which place is the digit 2 in the number 24? => hundreds or tens or tenths or ones..
Which of these numbers has a greater digit in the thousands place than..
Which of these numbers has a greater digit in the thousands place than in the hundred thousands place? => 190,275 or 362,107 or 956,418 or 253,894..
Choose the whole number that has the same digit in both the tens and t..
Choose the whole number that has the same digit in both the tens and the hundreds place. => 6,612 or 433 or 334 or 33,344..
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