1st Grade Subtraction Within 20 Quiz: 10 Questions with Explanations

1st Grade math quiz: Subtraction Within 20 – Maths PDF


This subtraction within 20 quiz for 1st Grade covers subtraction within 20 (Common Core 1.OA.A.1, 1.OA.B.4, 1.OA.C.6), with a free PDF to print.

This quiz has 10 multiple choice questions on subtracting within 20. Look at the pictures, pick the best answer and then read the reason. You may use counters or a number line.

Grade 1 · Common Core State Standards: 1.OA.A.1, 1.OA.B.4, 1.OA.C.6

Subtraction within 20 quiz: 10 questions

Question 1
10 counters, 3 crossed out.

How many counters are left?

Question 2

What is \(15 – 6\)?

Question 3
9101112131415-2
A hop back from 14.

Which sentence matches the hop?

Question 4
1349
Numbers 4, 9, 13.

Which fact is in this fact family?

Question 5

What is the missing number in \(8 + \text{?} = 17\)?

Question 6

What is \(18 – 18\)?

Question 7

Liam has 14 balloons. 5 balloons pop. How many balloons are left?

Question 8
Blue and orange rows.

How many more blue counters than orange counters?

Question 9

Which sentence is NOT in the fact family of 7, 5 and 12?

Question 10

What is \(11 – 2\)?

Remember

Remember
  • The difference is the answer to a subtraction problem.
  • Counting back: hop back from the whole, one number at a time.
  • Think addition: 13 – 5 asks what to add to 5 to get 13.
  • A fact family uses three numbers, like 8, 7 and 15.
  • Subtracting 0 or the whole number gives easy answers: 6 – 0 = 6 and 6 – 6 = 0.

How to use this subtraction within 20 quiz

Answer each question, read the explanation that appears, and keep track of your score. A score of 8 out of 10 or more means you are ready for the test.

Download the subtraction within 20 quiz as a PDF with the button below and keep it with your notes.

All Grade 1 chapters: Grade 1 math.

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1st Grade Subtraction Within 20 Quiz: 10 Questions with Explanations

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