NCERT Class 7 Mathematics

VISUALISING SOLID SHAPES 279 Complete the following table: Table 15.1 Can you see that, the two dimensional figures can be ident ...

280 MATHEMATICS Here you got anetby suitably separating the edges. Is the reverse process possible? Here is a net pattern for a ...

VISUALISING SOLID SHAPES 281 Here you find four nets (Fig 15.10). There are two correct nets among them to make a tetrahedron. S ...

282 MATHEMATICS Here is an incomplete net for making a cube. Complete it in at least two different ways. Remember that a cube h ...

VISUALISING SOLID SHAPES 283 are not equal, as they should be in a cube. Still, you are able to recognise it as a cube. Such a s ...

284 MATHEMATICS make a cuboid with dimensions 4 cm length, 3 cm breadth and 3 cm height on given isometric sheet. 15.4.2 Isometr ...

VISUALISING SOLID SHAPES 285 How many units have you taken along (i) ‘length’? (ii) ‘breadth’? (iii) ‘height’? Do they match wit ...

286 MATHEMATICS Give (i) an oblique sketch and (ii) an isometric sketch for each of the following: (a) A cuboid of dimensions 5 ...

VISUALISING SOLID SHAPES 287 Such visualisation is very helpful. Suppose you form a cuboid by joining such cubes. You will be ab ...

288 MATHEMATICS Play this Make clay (or plasticine) models of the following solids and make vertical or horizontal cuts. Draw ro ...

VISUALISING SOLID SHAPES 289 Will it be same during (a) forenoons? (b) evenings? Fig 15.24 (i) - (iii) Study the shadows in rela ...

290 MATHEMATICS Examine if the following are true statements: (i) The cube can cast a shadow in the shape of a rectangle. (ii) ...

VISUALISING SOLID SHAPES 291 For each solid, the three views (1), (2), (3) are given. Identify for each solid the corresponding ...

292 MATHEMATICS WHAT HAVE WE DISCUSSED? The circle, the square, the rectangle, the quadrilateral and the triangle are examples ...

EXERCISE 1.1 (a) Lahulspiti: –8°C, Srinagar: –2°C, Shimla: 5°C, Ooty: 14°C, Bangalore: 22°C (b) 30°C (c) 6°C (d) Yes; No 2. 35 ...

294 MATHEMATICS EXERCISE 1.4 (a) –3 (b) –10 (c) 4 (d) –1 (e) –13 (f ) 0 (g) 1 (h) –1 (i) 1 (a) 1 (b) 75 (c) – 206 (d) –1 (e) – ...

ANSWERS 295 (a) 153 5 (b) 333 4 (c) 153 4 (d) 251 3 (e) 191 2 (f) 271 5 (a) (i) 13 8 (ii) 21 9 (b) (i) 219 48 (ii) 61 24 8. ( ...

296 MATHEMATICS | || EXERCISE 2.5 (i) 0.5 (ii) 0.7 (iii) 7 (iv) 1.49 (v) 2.30 (vi) 0.88 (i) Rs 0.07 (ii) Rs 7.07 (iii) Rs 77.77 ...

ANSWERS 297 31 43 55 64 72 81 91 (i) 9 (ii) 1 (iii) 8 (iv) 5 2 4. 50 5. (i) 12.5 (ii) 3 (iii)^0864 4 +++ =^18 or^9 42 (iv) A ...

298 MATHEMATICS (a) No (b) No (c) Yes (d) No (e) No (f) No (i) p = 3 (ii) m = 6 (i) x + 4 = 9 (ii) y – 2 = 8 (iii) 10a = 70 (iv ...