# Lesson Worksheet: Counting Back to Subtract Mathematics

In this worksheet, we will practice subtracting either a one-digit number or a two-digit number from a two-digit number using counting back.

Q1:

Alanoud put her counter on 12 then moved it back 2 spaces. Help her find the missing number: Q2:

Omar holds up 9 fingers and starts counting down as he puts down one finger at a time. He stops when he is holding up 4 fingers. Decide whether he was adding or subtracting by picking the number sentence that describes what he did.

• A
• B
• C

Q3:

This is a subtraction machine.

It subtracts 7 from any number you put in. What number will come out? What number will come out? Q4:

If there should be 12 counters in the given model, how many counters are missing? Q5:

Nada is playing a game using number cards. She steps on a number and jumps to land on another number. If Nada steps on number 18 and jumps backward 4 jumps, which number will she land on? Q6:

Mariam has 12 counters.

She takes away 3. Count back from 12 to find out how many counters she has left. Q7:

Nabil wants to calculate using the counting on method. He starts with 9 red counters. Then, he counts on to 13 by adding blue counters. Complete the following using the counters: .

Q8:

Calculate .

Q9:

What is 16 take away 7?

Q10:

Bassem has two cards. Each card has a number on it. If the sum of the numbers on the two cards is 13, what is the missing number on the other card? 