Chapter 2: Addition Within 10,000

Number Tricks

100

Which property lets you switch the order of addends without changing the sum?

Commutative property. Example: 7 + 5 = 5 + 7.

200

Which three expressions equal 20?                            A) 8+5+7                                                              B) 9+6+5                                                                 C) 4+8+9                                                              D) 10+3+7

A, B, and D. Each equals 20.

300

Find the sum 38 + 27 + 12.

77

400

Find the sum: 15 + 25 + 35 + 45.

120

500

Find the sum 12 + 16 + 20 + 24 + 28 + 32 + 36

168

Break it Apart

100

Break apart 46 into tens and ones.

40 + 6

200

Complete the equation: 35 + 47 = 35 + 40 + ___.

7

300

Use place value to find 234 + 152.

386. Hundreds: 200+100=300; tens: 30+50=80; ones: 4+2=6.

400

Break apart 2,415 + 1,263 by place value. What is the sum?

3,678. Add 3,000 + 600 + 70 + 8.

500

Solve 398 + 257.

655

Add it Up!

100

Find the sum: 126 + 243.

369

200

Find the sum: 457 + 268.

725

300

Find the sum: 2,346 + 1,527.

3,873

400

Find the sum: 4,768 + 2,159.

6,927

500

Find the sum: 5,687 + 3,294

8,981

Number Detective

100

What number is missing? 56 + ___ = 100.

44

200

Find the missing digit: 24x + 135 = 381.

x = 6

300

Find the missing digit: 3,4x8 + 217 = 3,675.

x=5

400

Find the missing digit: 2,6x5 + 1,278 = 3,913.

x = 3

500

A student writes 4,x75 + 1,286 = 5,961. Find the missing digit

x = 6

Word Problems

100

A library has 125 fiction books and 243 nonfiction books. How many books are there altogether?

368 books

200

A school collected 1,275 cans on Monday and 1,438 on Tuesday. How many cans were collected?

 2,713 cans.

300

Mia saved $1,250. Her brother saved $350 more than Mia. How much did they save altogether?

$2,850

400

A park had 2,165 visitors on Friday. Saturday had 785 more visitors than Friday. How many visitors came on both days?

5,115 visitors.

500

A fundraiser collected $1,785 in week 1. Week 2 collected $625 more than week 1. Week 3 collected $1,940. How much was collected across all three weeks?

$6,135

Chapter 1 Throwback!

100

In the number 7,482, what is the value of the digit 4?

400 (4 hundreds)

200

Write 5,306 in expanded form.

5,000 + 300 + 6

300

Compare using <, >, or =: 6,409 ___ 6,490. Explain how you know.

< because 0 tens is less than 9 tens.

400

Round 7,658 to the nearest hundred AND nearest thousand.

7,700 and 8,000

500

I'm a 4-digit number. My thousands digit is 4. My hundreds digit is twice my thousands digit. My tens digit is 3 less than my hundreds digit. My ones digit is 0. What number am I?

4,850