Topic 10 Math review

Place Value Blocks

100

Write the equation that matches the model and solve: 

(#1)

26 + 32 = 58

200

Draw place value blocks to show 50 + 3

(modeled correctly)

300

What are two different ways to write the equation for these place value blocks: 

(#4)

6 tens + 3 tens = 9 tens

60 + 30 = 90

Hundred Chart

100

Use a 100 chart to explain how solve 46 + 20. (hint: start at ______ go ______ end on ______)

Start at 46 and move down two rows to get to 66.  So 46 + 20 = 66

200

Use an open number line to show how to solve 40 + 23

(number line) 40 + 23 = 63

300

Use either a 100 chart or open number line to show: 4 + 35

39; I started at 35 and added 4 ones (number line or 100 chart)

Model to solve

100

16 + 12

16 + 12 = 28

200

26 + 18

26 + 18 = 44

300

Do you need to make 10 to solve 18 + 13?  Explain how you know by showing with a model and solve.

Yes, because 8 ones and 3 ones = 11 ones.  You group ten ones to make a new ten and have one left over.

18 + 13 = 31

Mental Math (10 seconds to respond)

100

53 + 10 

53 + 10 = 63

200

20 + 70 = 

20 + 70 = 90

300

30 + _____ = 60

30 + ___30___ = 60

Word Problems

100

There are 27 fish and 30 cats.  How many animals in all? (show your work any way you'd like)

27 + 30 = 57

200

There are 20 dogs at the shelter.  Some more are brought in and now there are 60 dogs at the shelter.  How many dogs were brought in?  Write an equation and solve. Show your thinking.

20 + __40__= 60

(show work)

300

There are 30 cards on the floor and some more in a box.  All together there are 52 cards.  How many cards are on the floor?  Write an equation, solve, and show your thinking.

30 + __22__ = 52

(show your work)