How to subtract - SSAT Elementary Level Quantitative

Card 0 of 3380

Question

FInd the difference.

Answer

To find the difference, you must subtract. Line up the numbers vertically. Remember to use the rules of borrowing to subtract.

$\ 70-47=23$

The difference is 23.

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Question

$\frac{\begin{array}[b]{r}3\ -\ 3\end{array}}{ \ \ \ \space ?}$

Answer

To subtract we can count backwards. Start at and count back .

$\frac{\begin{array}[b]{r}3\ -\ 3\end{array}}{ \ \ \ \space 0}$

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Question

Answer

We first subtract the hundredths place:

Then the tenths place: Since is less than , we have to borrow from the , the becomes a and the becomes :

Then the ones place: , since the is less than , we have to borrow from the , the becomes is the tens place, and the becomes in the ones place:

So the final answer is .

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Question

Bob is inches shorter than his older brother Terry. If Terry is inches tall, how tall is Bob?

Answer

To find Bob's height, you must subtract (shorter than) Terry's height by the difference of heights between the brothers:

$61-5=56\ inches$

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Question

$\dpi{100} 342-31=$

Answer

Write 342. Write 31 just below it, with the 3 under the 4, and the 1 under the 2. Now subtract straight down, starting on the right side.

$\dpi{100} 2-1=1$

$\dpi{100} 4-3=1$

$\dpi{100} 3-0=3$

Our answer is 311.

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Question

Place the following numbers in ascending order:

Answer

2 is less than 4, 4 is less than 11, and 11 is less than 12.

Note that ascending means increasing, not decreasing!

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Question

$\dpi{100} \frac{8}{9}-\frac{4}{9}=$

Answer

The bottom is the same in both fractions. This means that we can subtract straight across for the top numbers. The bottom number remains the same.

$\dpi{100} \frac{8}{9}-\frac{4}{9}= \frac{8-4}{9}=\frac{4}{9}$

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Question

Find the difference.

Answer

Subtract the ones , then the tens, then the hundres place. The difference is 414.

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Question

Max has 3 toy cars. Luke has 5 toy cars. How many more toy cars does Luke have than Max?

Answer

The term "how many more" is asking you to subtract. Since Luke has more toy cars than Max, put the greater number first. Then subtract the lesser number .

Luke has two more cars than Max.

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Question

Find the difference.

Answer

Line up the digits vertically. When subtracting the digits in the ones place, you will need to borrow a ten, so the 8 in the tens place becomes a 7 and the 1 in the ones place becomes 11. Now subtract the digits in the ones place . Now subtract the digits in the tens place . The difference is 55.

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Question

Subtract: $\frac{1}{2} - \frac{1}{5}$

Answer

Write both fractions in terms of the least common denominator, in this case 10:

$\frac{1}{2} - \frac{1}{5} = \frac{1\cdot 5}{2 \cdot 5} - \frac{1\cdot 2}{5\cdot 2} = \frac{5}{10} - \frac{2}{10}=\frac{5-2}{10}=\frac{3}{10}$

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Question

Derrick saw nine birds sitting on a tree branch. Three flew away. Then two more flew away. How many birds are on the tree branch now?

Answer

Subtract; start with nine birds. Three flew away: .

Six are left, then two more flew away: .

Four birds are left on the branch.

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Question

Find the difference between and .

Answer

To find the difference, you need to subtract. When subtracting, always remember to put the greater number first!

$\begin{matrix} &22 \ - & 14\ \end{matrix}$

When we try to subtract the ones place, we will need to cancel. For 22, the ones place becomes 12 and the tens place becomes 1.

$\begin{matrix} & \ 1\ 12\ - & 1\ 4\ & \ \ 8 \end{matrix}$

The difference between 14 and 22 is 8.

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Question

What number is in the hundredths place of

Answer

. The hundredths place is occupied by 7.

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Question

Answer

$\fn_cm \fn_cm Line;up;the;numbers;and;subtract;straight;down.$

$\fn_cm \underline{-;35}$

$0-5=not;positive\rightarrow ;borrow;a;1;from;the; 10;in;\underline{10}0.$

$9^{1}0$

$\fn_cm \underline{-;3, 5}$

$\fn_cm 6, 5$

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Question

Answer

$\underline{-;7}$

$3-7=not;positive\rightarrow ;borrow;a;1;from;the;2;in; \underline{2}3.$

$\fn_cm 1: ^{1}3$

$\fn_cm \underline{-;;;7}$

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Question

Answer

$\underline{-;19}$

$7-9=not;positive\rightarrow ;borrow;a;1;from;the; 8;in;\underline{8}7.$

$7: ^{1}7$

$\underline{-;1: 9}$

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Question

Answer

$\underline{-35;;;-35}$

$\underline{-;35}$

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Question

Answer

$\fn_cm \underline{-3;;;;-3}$

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Question

In 5 years, Eric will be 14 years old. How old is Eric now?

Answer

Subtract 5 from 14 to find Eric's current age: 14 - 5 = 9

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