Multiply then subtract
for 1st grade
Work out the answer when you multiply first and then subtract
1st grade : Number machine : multiply then subtract
A number machine is a way of doing 2 or more different sums on a single input number. In this topic you will be multiplying a given number by another number first, then taking the answer from that and subtracting some number from it. This is called a two step calculation. In the first question you are asked to take 3, multiply it by 2, then subtract 2 from the answer. In the second question you are asked to take 2, multiply it by 5, then subtract 3 from the answer.
- Start with a number
- Multiply it by a number in the machine
- Take that answer and subtract another machine number from it
Start with 3, multiply by 2 then subtract 2
3 x 2 = 6
6 - 2 = 4
So 3 x 2 - 2 = 6
Start with 5, multiply by 3 then subtract 4
Start with 5
5 x 3 = 15
15 - 4 = 11
So 5 x 3 - 4 = 11
Below is a table showing the first 6 question answer pairs for the topic "Multiply then subtract" as used in the lessons for this topic. Our games and tests for the topic use these 6 items plus 10 additional question answer pairs.
The topic "Multiply then subtract" is in the category Multiplication for 1st grade (ages 6 to 7).
Revise 'Multiply then subtract' with one of our games for 1st grade
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
Counting * Comparing numbers * Pattern * Place value * Addition * Subtraction * Add + Subtract * Multiplication * Division * Multiply + Divide * Fractions * Measurements * Shapes * Position + Direction * Statistics *
