Rounding integers to powers of ten Jigsaw 26 000 e st 75 ear 10 the n to 10 0 2478 to the nearest 10 t1 he t to 00 2 1 635 arest ne 600 19 to 0 283 the nea res 00 Instructions. he t to 10 4 56 arest ne 64 00 335 010 00 0 89 nea 315 res to t t 1 he 00 he t to 0 5 1 2 t 9 s 1 are ne 3007 to the nearest 1000 he ot 0 4 t 00 75 10 23 rest n ea 4005 to the nearest 10 60 he t to 10 5 32 arest ne 10 340 19 000 Page 1 of 3 Print on to card and laminate. If making a class set it is best to use a different colour for each jigsaw so they can easily be sorted. Cut out the pieces. www.mathswithgraham.org.uk Rounding integers to powers of ten Jigsaw Page 2 of 3 he 0 t o 10 t 564 arest ne 4 0 10 3000 he 0 t to 00 4 60 8 10 9 0 25 arest Jigsaws are best done in small 0 ne groups of 2 or 3. They help 6136 to the nearest thousand 25 765 to the nearest 1000 3 70 0 372 to the nearest 10 40 27 3 nea 4 to res the t1 00 0 5126 to the nearest 100 1100 0 1930 he t to 00 5 1 192 arest ne 3 51 3 400 00 0 330 20 he t o 0 t 6 t1 2 1 5 ar es ne students discuss the problems, think about the maths and reconsider misconceptions. www.mathswithgraham.org.uk Rounding integers to powers of ten Jigsaw 00 30 0 20 2 4 70 0 1900 the to 0 6 4 10 33 rest n ea 342 to the nearest 10 0 12 964 to the nearest 10 000 65 nea 3 to t r e s he t1 00 56 19 0 3 0 42 to the nearest 10 he 0 t to 10 6 43 arest ne he 0 t o t1 t 55 ares ne he t o t 07 0 0 1 5 33 arest ne 4219 to the nearest 10 89 300 00 0 2 4 80 30 Page 3 of 3 5100 he ot 0 7t 59 100 18 rest nea Thanks to Craig Barton whose original Jigsaw I have adapted to produce this. 40 Contents 24 triangles www.mathswithgraham.org.uk