The amount of tablespoons that are in 100 grams is 7.05 tablespoons.
So you have at least 7 tablespoons in 100 grams.
You'd need 7 tablespoons of your ingredients and then maybe just a little bit more on the tablespoon to equal out the 100 grams of ingredients.
Although if your recipe calls for 100 grams of ingredients then 7 tablespoons should be just fine.
Or you can get a small scale to weigh out ingredients which can make it easier and weigh out your ingredients to the 100 grams of weight you need.