Testinar Grade 3 math

Adding and Subtracting Within 1000

Students will add and subtract within 1,000 using place-value strategies and reliable algorithms.

CH02-02 Number and Operations in Base Ten

Directions Solve each problem. Show your reasoning on the page or on separate paper. Check the answer key only after finishing.

What is \(486+237\)?
1. \(613\)
2. \(713\)
3. \(723\)
4. \(624\)
Which number does this place-value chart show?
1. \(354\)
2. \(345\)
3. \(453\)
4. \(534\)
\(245+318=?\)
1. \(563\)
2. \(572\)
3. \(573\)
4. \(562\)
Ben has \(127\) stickers. He gets \(234\) more stickers. How many stickers does Ben have now?
1. \(351\)
2. \(341\)
3. \(370\)
4. \(361\)
What is \(542-218\)?
1. \(334\)
2. \(422\)
3. \(314\)
4. \(324\)
Using the place-value chart, what is \(367+215\)?
1. \(572\)
2. \(681\)
3. \(692\)
4. \(582\)
\(308+175=?\)
1. \(483\)
2. \(484\)
3. \(475\)
4. \(493\)
What is \(635-241\)?
1. \(394\)
2. \(404\)
3. \(384\)
4. \(464\)

Teacher and parent reference

Answer key and explanations

C. \(723\)
Add the ones (\(6+7=13\), write \(3\), carry \(1\)), tens (\(8+3+1=12\), write \(2\), carry \(1\)), hundreds (\(4+2+1=7\)). Answer: \(723\).
A. \(354\)
Reading the chart: \(3\) hundreds is \(300\), \(5\) tens is \(50\), \(4\) ones is \(4\). Total: \(300+50+4=354\).
A. \(563\)
Add ones: \(5+8=13\) (write \(3\), carry \(1\)). Add tens: \(4+1+1=6\). Add hundreds: \(2+3=5\). Answer: \(563\).
D. \(361\)
Add: \(127+234=361\). Ones: \(7+4=11\) (write \(1\), carry \(1\)). Tens: \(2+3+1=6\). Hundreds: \(1+2=3\).
D. \(324\)
Subtract: ones (\(2-8\) requires regrouping, so \(12-8=4\)), tens (\(3-1=2\)), hundreds (\(5-2=3\)). Answer: \(324\).
D. \(582\)
Ones: \(7+5=12\) (write \(2\), carry \(1\)). Tens: \(6+1+1=8\). Hundreds: \(3+2=5\). Answer: \(582\).
A. \(483\)
Ones: \(8+5=13\) (write \(3\), carry \(1\)). Tens: \(0+7+1=8\). Hundreds: \(3+1=4\). Answer: \(483\).
A. \(394\)
Ones: \(5-1=4\). Tens: \(3-4\) requires regrouping, so \(13-4=9\). Hundreds: \(5-2=3\). Answer: \(394\).