More than, less than

Your book, Maths Mela (Chapter 10), has many problems with 'more than' and 'less than'. The trick is to decide: is the new number bigger or smaller? If it is MORE, add. If it is LESS, subtract. A bar diagram helps: draw the known number as a bar, then a longer or shorter bar for the new one.

Maharashtra has 444 tigers. Madhya Pradesh has 341 more than Maharashtra, so it has 444 + 341 = 785 tigers. Uttarakhand has 116 more than Maharashtra: 444 + 116 = 560 tigers.

At Kaziranga National Park, 8591 visitors came in December and 6415 in November. December had 8591 - 6415 = 2176 more visitors. November had 1587 more than October, so October had fewer: 6415 - 1587 = 4828.

Some problems take more than one step. In a small town there are 6304 jeeps. Buses are 253 more than jeeps: 6304 + 253 = 6557. Tractors are 5247 less than buses: 6557 - 5247 = 1310. Taxis are 1579 more than tractors: 1310 + 1579 = 2889. Each answer is used for the next step.