1 x 3 Digit Multiplication
1 x 2 Digit Multiplication
2 x 2 Digit Multiplication
Estimation
Math Vocabulary
100
2 x 520
1,040
100
3 x 55
165
100
12 x 12
144
100
Estimate 30 x 40
1,200
100
A number close to an exact amount or to find about how many or how much.
What is an Estimate
200
5 x 381
1,905
200
4 x 28
112
200
27 x 16
432
200
Estimate 900 x 80
72,000
200
An arrangement of objects, symbols, or numbers in rows and columns. 
What is an Array
300
7 x 925
6,475
300
9 x 34
306
300
35 x 70
2,450
300
Estimate 15,000 x 10
150,000
300
The product of the ones, or tens, or hundreds, and so on in multidigit multiplication.
What is a Partial Product
400
Mrs. Zuehlke ordered 6 packs of pencils. There were 247 pencils in each pack. How many pencils does she have in all?
1,482
400
There are 6 kindergarten classes at Cass Lake-Bena Elementary. If each class has 31 students in it, how many kindergarten students are there altogether?
186 students
400
Mrs. Floria had 17 containers of seashells for an art project. Each container had 83 seashells in it. How many seashells does Mrs. Floria have for her art project?
1,411 seashells
400
Estimate 698 x 40
28,000
400
Finding the nearest ten, hundred, thousand, or some other place value. The usual rule is to go up if the next digit to the right is 5 or more and go down if the next digit to the right is less than 5.
Example:
463 to the nearest ten is 460.
463 to the nearest hundred is 500
What is Rounding
500
Mrs. Ruzek bought 7 new wobbly chairs for her classroom. Each chair cost $689. How much money did she spend on wobbly chairs?
$4,823
500
Ms. Garrison ordered 7 boxes of chip bags for her class for snack time. There are 76 chip bags in each box. How many bags of chips does Ms. Garrison have in all?
532 bags of chips
500
Mrs. Stalboerger ordered new colored pencils for the whole 4th grade. She ordered 94 packs of colored pencils, each pack cost $46. How much did she spend on colored pencils?
$4,324
500
Estimate 9923 x 782
8,000,000
500
___________ means to break apart a number into easier numbers (usually by place value)
What is the Decompose