Question

100 twigs are needed in total to make the bridge. There are 7 bundles of twigs. Each bundle has 10 twigs. How many more twigs are needed?

• A. 40
  
• B. 31
• C. 3 Tens
• D. 5 Tens

Answer 1

The correct option is C 3 Tens

Say:
We have to find out how many more twigs are needed.

Steps:
$\bullet$ Number of twigs required to make the bridge = 100
$\bullet$ Bundles of twigs already there = 7
$\bullet$ 1 bundle = 10 twigs
$\bullet$ So, 7 bundles = 70 twigs
$\bullet$ The number of twigs fewer in number: 100 - 70 = 30
$\bullet$ 30 = 3 Tens
$\bullet$ Hence, Option D is correct.

WB: If required, use the whiteboard to represent the problem.