Worksheet: Part–Whole Bar Models: Numbers up to 20

In this worksheet, we will practice solving one-step addition and subtraction problems with numbers up to 20 by drawing a part–whole bar model.

Q1:

Find the missing number.

11+7=

Q2:

Find the missing number to make the equation correct.

Q3:

Find the missing number.

12+=15

Q4:

Find the missing number.

+8=14

Q5:

Find the missing number to make the equation correct.

Q6:

Isabella has 12 coins.

After she puts some in a bag, there are 7 left.

So, there are 127 coins in the bag. How many coins are there in the bag?

Q7:

Use the model to help you find the missing number: 18+=20.

Q8:

Hannah weighs 55 kilograms. Her dog weighs 7 kilograms. If they get on the scale together how much will they weigh?

Q9:

Fill in the blank to make the equation correct: 14=9.

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