The math lessons below have been selected from the resources of Teacher Created Resources. (Click on the advertisement above for a complete catalog of Teacher Created Resources teacher-ready activities.) The lessons are arranged by grade; scroll down to find lessons for your level. Answer keys are provided below for lessons that require them.

**Measurement Tools****ANSWERS**: (Page 95) 1. calendar, 2. scale, 3. ruler, 4. clock, 5. cup

**Two Scoops** (computation: subracting 2-dgit numerals)**ANSWERS**: (Page 94) 1. 56, 2. 19, 3. 9, 4. 18, 5. 27, 6. 39, 7. 49, 8. 7

**Make It True** (number sense)**ANSWERS**: (Page 93) Accept all answers that make the statements true.

**The Tall Apartment** (number sense: ordinal numbers)**ANSWERS**: (Page 93) 1. first, 2. fifth, 3. second, 4. third, 5. fourth, 6. sixth

**Daily Warm-up 15/16** (algebra, patterns and functions)**ANSWERS**: (Page 175)

Warm-Up 15:1. $8, 2. C

Warm-Up 16: 1. C,2. 33

**Daily Warm-up 9/10** (numbers and numeration)**ANSWERS**: (Page 39)

Warm-Up 9: 1. 421, 2. B

Warm-Up 10: 1. B, 2. 710

**Daily Warm-up 45/46** (graphs and probability)**ANSWERS**: (Page 142)

**Daily Warm-up 23/24** (measurement and geometry)**ANSWERS**: (Page 107)

**Daily Warm-up 13/14** (operations)**ANSWERS**: (Page 73)

Warm-Up 13: 1. 12, 2. 13 < 23

Warm-Up 14: 1. 4, 2. 5

**When You’ve Got to Share!** (patterns, numbers, multiplication, division)**ANSWERS**: (Page 93) 1. 8 ÷ 4 = 2, 2. 12 ÷ 4 = 3, 3. 6 ÷ 3 = 2, 4. 18 ÷ 6 = 3

**Bananas Plus** (adding and subtracting strategies)**ANSWERS**: (Page 91) Moppy had the most. He had 15 bananas., Mushy had 14, Marsha had 14

**Mixed Multiplication** (multiplication)**ANSWERS**: (Page 236) 1. 2 x 1 = 2, 2. 3 x 3 = 9, 3. 5 x 8 = 40, 4. 4 x 4 = 16

**Number One** (multiplication)**ANSWERS**: (Page 236) 1. 1, 2. 8, 3. 1, 4. 4, 5. 3, 6. 1, 7. 1, 8. 2, 9. 11

**Where Do You Like to Travel?** (organizing numbers)**ANSWERS**: (Page 234) 1. Hawaii, 2. Texas, 3. Florida and Texas, 4. Answers will vary.

**Looking at the Clock** (time)**ANSWERS**: (Page 233) 1. 1:30, 2. 12:00, 3. 5:00, 4. 3:30, 8:30 is closest to the time you go to bed.

**Double the Fun** (addition)**ANSWERS**: (Page 230) 1. 42, 2. 76, 3. 39, 4. 34, 5. 61, 6. 28, 7. 30, 8. 90, 9. 90, 10. 43, 11. 47, 12. 83, 13. 43, 14. 23

**Subtraction Riddle** (addition and subtraction)**ANSWERS**: (Page 237) 1. 5, 2. 9, 3. 12, 4. 7, 5. 11, 6. 10, 7. 13, 8. 9, 9. 8, 10. 9, 11. 6, 12. 12

**Adding 3 Numbers** (addition and subtraction)**ANSWERS**: (Page 236) 1. 10, 2. 8, 3. 12, 4. 7, 5. 11, 6. 13, 7. 9, 8. 6, 9. 14

**Ten, More or Less** (number sense)**ANSWERS**: (Page 235) 1. 37, 57, 2. 72, 92, 3. 26, 46, 4. 69, 89, 5. 10, 30, 6. 43, 63, 7. 31, 51, 8. 64, 84, 9. 58, 78, 10. 75, 95

**Mystery Numbers** (number sense)**ANSWERS**: (Page 234) 1. 952, 2. 186, 3. 403, 4. 267, 5. 398, 6. 100

**Counting Money** (money)**ANSWERS**: (Page 237) 1. 7, 2. 9, 3. 8, 4. 5, 5. 10, 6. 10

**One Less** (number sense)**ANSWERS**: (Page 236) 1. Students should draw a set of 2 spoons. 2. Students should draw a set of 3 arrows. 3. Students should draw 1 egg. 4. Students should draw a set of 3 paw prints. 5. Students should draw a set of 5 leaves.

**Count the Candles** (numbers and counting)**ANSWERS**: (Page 235) 1. one, 2. three, 3. four, 4. five, 5. two, 6. zero

**Counting More or Less** (number sequence, more than/less than)**ANSWERS:** 1. already done; 2. 2, 6; 3. 5, 9; 4. 4, 0; 5. 8, 10; 6. 8, 2; 7. already done; 8. 3, 1; 9. 10, 4; 10. 8, 6; 11. 0, 3; 12. 7, 6. Now Try This: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.

**Classifying/Identifying Shapes** (recognizing shapes)**ANSWERS:** (Page 38.) 1. 5, 9, 5, 19. 2. 15, 8, 7. 3. 3, 1, 4. 4. pentagon. 5. 4, 1, 3. 6. 5, 2, 2, 9. 7. hexagon, 1. (Page 39) Answers will vary.

**Subtract to 10** (subtraction)**ANSWERS:** (Page 26) 1. 2; 2. 2; 3. 5; 4. 5; 5. 1; 6. 4; 7. 0; 8. 1; 9. 9; 10. 2; 11. 5; 12. 7. (Page 27) 1. 3; 2. 1; 3. 0; 4. 7; 5. 5; 6. 3; 7. 6; 8. 5; 9. 4; 10. 6; 11. 8; 12. 0; 13. 3; 14. 8; 15. 3; 16. 6; 17. 2; 18. 7; 19. 4; 20. 1; 21. 10;- 7 = 3, 6 - 3 = 3, 4 - 1 = 3, 8 - 5 = 3. (Page 28) 1. already done; 2. 8 - 6 = 2, 8 - 2 = 6; 3. 9 - 2 = 7, 9 - 7 = 2; 4. 7 - 4 = 3, 7 - 3 = 4; 5. 6 - 0;= 6, 6 - 6 = 0; 6. 4 - 3 = 1, 4 - 1 = 3; 7. 10;- 1 = 9, 10;- 9 = 1; 8. 5 - 2 = 3, 5 - 3 = 2; 9. 10; 10. 3; 11. 6; 12. 0; 13. 4; 14. 1.

**Reasoning in Word Problems** (patterns, place value, odd/even)**ANSWERS:** (Page 14) 1. triangle, trapezoid, triangle, trapezoid; 2. rectangle, square, rectangle, square; 3. center, left, center, left; 4. one window on each side of door, one window on right side of door, one window on each side of door, one window on right side of door; 5. Answers will vary. (Page 15) 1. 9; 2. 13; 3. 35; 4. 120; 5. 118; 6. 102; 7. 246; 8. 201. (Page 16) 1. 97; 2. 666; 3. 663; 4. 98; 5. 100;and 670.

**Telling Time** (telling time - hours)

**Number Patterns** (number sequence, patterns)**ANSWERS:** (Page 10) Naming the Pattern. 1. 14, 16, 18, 20, 22; 2. 37, 39, 41, 43, 45; 3. 31, 33, 35, 37, 39; 4. Counting by 2's; 5. 30, 35, 40, 45, 50; 6. 86, 91, 96, 101, 106; 7. 62, 67, 72, 77, 82; 8. Counting by 5's; 9. 80, 90, 100, 110, 120; 10. 35, 45, 55, 65, 75; 11. 73, 83, 93, 103, 113; 12. Counting by 10's; 13. 200, 250, 300, 350, 400; 14. 280, 330, 380, 430, 480; 15. 760, 810, 860, 910, 960; 16. Counting by 50's; 17. 600, 700, 800, 900, 1000; 18. 410, 510, 610, 710, 810; 19. 575, 675, 775, 875, 975; 20. Counting by 100's; (Page 11) Identifying the Pattern. 1. already done; 2. balloon, cloud, A A B C D A A B; 3. snail, A B B C D D A B; 4. 2, 3, 4, A, AB, ABC, ABCD; 5. Patterns will vary. Labeling will vary.

**Math Vocabulary** (addition, subtraction, math vocabulary)**ANSWERS:** (Page 10) 1. addends 123, 300, sum 423; 2. addends 160, 125, sum 285; 3. addends 407, 312, sum 719; 4. addends 525, 330, sum 855; 5. addends 222, 333, sum 555; 6. addends 709, 270, sum 979; 7. 227, 352; 8. 579. 9. 419, 560; 10. 979; 11. 255 + 400;= 655; 12. 158 + 511 = 669. (Page 11) 1. 321, 2. 311, 3. 600, 4. 241, 5. 311, 6. 321, 7. 749, 8. 210, 9. 539, 10. 428, 11. 310, 12. 118, 13. 567 - 246 = 321, 14. 821 - 301 = 520.

**Estimation** (estimating, measuring)

**Using Graphs and Directions** (graphing - coordinates, following directions)**ANSWERS:** 1. pick and shovel--(4, 0). 2. palms form an X--(4, 2). 3. sand dollar--(2, 1). 4. pail and shovel--(1, 0). 5. beach umbrella and towel--(3, 3). 6. diver's mask and fins--(3, 4). 7. sandcastle--(5, 5); quicksand--(4, 4). 8. starfish--(5, 4); anchor--(5, 3). 9. rowboat--(1, 3). 10;treasure chest--(1, 2).

**Two-Digit Addition/No Regrouping** (addition, following directions)

**Shapes Activities** (shapes, geometry, tangrams)

**Nonstandard Measurement** (measurement, comparing measurements)**ANSWERS:**(Page 6) 1.-6. Answers will vary. 7. Yes, because I would need to use fewer fingers. (Page 7) 1.-10. Answers will vary. (Page 8) 1.-9. Answers will vary. 10. If my foot was longer than 12 inches, it would take fewer feet to measure items.

**Counting Coins and Bills** (money, graphing)**ANSWERS:** (Page 30) 1. 3 quarters, 2 dimes, and 1 nickel (or) 2 quarters, 4 dimes, and 2 nickels; 2. 1 quarter, 7 dimes, and 1 nickel; 3. 1 half dollar, 1 quarter, and 5 nickels; 4. 2 half dollars; 5. 1 half dollar, 1 quarter, 2 dimes, and 5 pennies; 6. 10;dimes; 7. George Washington; 8. Andrew Jackson; 9. Abraham Lincoln; 10;Alexander Hamilton. (Page 31)

The graph would be completed as follows: Monday = $4.00; Tuesday = $7.00; Wednesday = $1.00; Thursday = $5.00; Friday = $2.00. 1. $1.56; 2. $5.25; 3. $3.35; 4. $4.30; 5. $2.80. 6. $2.99; 7. $5.75; 8. $2.35. (Page 32) 1. $4.00; 2. $7.00; 3. $1.00; 4. 5, $5.00; 5. 2, $2.00; 6. 19 magazines; 7. $19.00; 8. Tuesday.

**Fact Familes** (number facts, addition, subtraction)**ANSWERS:** 1. 3 + 7 = 10; 7 + 3 = 10; 10;- 7 = 3; 10;- 3 = 7. 2. 4 + 9 = 13; 9 + 4 = 13; 13 - 9 = 4; 13 - 4 = 9. 3. 2 + 15 = 17; 15 + 2 = 17; 17 - 2 = 15; 17 - 15 = 2. 4. 6 + 11 = 17; 11 + 6 = 17; 17 - 6 = 11; 17 - 11 = 6. 5. 1 + 16 = 17; 16 + 1 = 17; 17 - 1 = 16; 17 - 16 = 1. 6. 5 + 13 = 18; 13 + 5 = 18; 18 - 5 = 13; 18 - 13 = 5. 7. +, -. 8. -, +. 9. +, + or -. 10. +, -. 11. -, +. 12. +, -. 13. 16 - 6 = 10;- 3 = 7 horses. 14. 6 - 3 = 3 more sheep. 15. 7 - 3 = 4 more horses. 16. 7 - 6 = 1 fewer sheep. 17. sheep + horses (6 + 7 = 13). 18. horses - sheep (7 - 6 = 1).

**Graphs** (estimating, graphing)

**Identifying Fractions** (simple fractions)**ANSWERS:** 1. 1, 2, 3, 4, 5, 6; 2. one whole, one half, one third, one fourth, one fifth, one sixth; 3. 1/1, 1/2, 1/3, 1/4, 1/5, 1/6.

** Drawing Word Problems** (word problems)

** Rounding Numbers** (rounding numbers, place value, word problems)**ANSWERS:** (Page 18) 1. 40; 2. 30; 3. 40; 4. 60; 5. 70; 6. 90; 7. 300; 8. 600; 9. 500; 10;600; 12. 800; 13. 900; 14. 8,000; 15. 8,000; 16. 4,000; 17. 6,000; 18. 9,000; 19. 2,000. (Page 19) 1. 40;+ 20;= 60; 60;children were invited to the party. 2. 150;+ 130;+ 210;= 490; Mariah bought 490;items in all. 3. 190;- 90;= 100; 100;people said "no." 4. 210;+ 320;+ 60;= 590; Lucy set out 590;jellybeans. 5. 570;- 240;= 330;- 200;= 130; The third cupcake had 130;sprinkles. 6. 220;+ 300;+ 370;= 890; 890;points were scored in all. 7. 60, 100, 130, 490, 590, 890. (Page 20) 1. H 300; 2. T 30; 3. Th 1,000;or H 1,100;or T 1,090; 4. T 10; 5. H 800;or T 820; 6. Th 2,000;or H 2,400;or T 2,370; 7. T 50; 8. Th 4,000;or H 4,000;or T 4,030; 9. Th 1,000;or H 700; 10. Th 6,000;or H 6,000;or T 5,960; 11. 100;+ 400;= 500. 12. 600;- 300;= 300; 13. 500;+ 300;= 800; 14. 900;- 800;= 100; 15. 500;+ 200;= 700; 16. 700;- 600;= 100; 17. 800;+ 100;= 900; 18. 500;- 400;= 100.

**Adding and Subtracting with Charts** (reading a chart)

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