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?