Practice with the help of **Spectrum Math Grade 1 Answer Key Chapter 1 Pretest** regularly and improve your accuracy in solving questions.

## Spectrum Math Grade 1 Chapter 1 Pretest Answers Key

**Check What You Know**

**Addition and Subtraction Facts through 10**

**Add.**

**1.**

Answer:

Explanation:

Addition:

5 + 1 = 6.

=> Five plus one equals six.

**2.**

Answer:

Explanation:

Addition:

3 + 2 = 5.

=> Three plus two equals five.

**3.**

Answer:

Explanation:

Addition:

1 + 1 = 2.

=> One plus one equals two.

**4.**

Answer:

Explanation:

Addition:

2 + 4 = 6.

=> Two plus four equals six.

**5.**

Answer:

Explanation:

Addition:

6 + 0 = 6.

=> Six plus zero equals six.

**6.**

Answer:

Explanation:

Addition:

4 + 1 = 5.

=> Four plus one equals five.

**7.**

Answer:

Explanation:

Addition:

4 + 0 = 4.

=> Four plus zero equals four.

**8.**

Answer:

Explanation:

Addition:

2 + 1 = 3.

=> Two plus one equals three.

**9.**

Answer:

Explanation:

Addition:

3 + 0 = 3.

=> Three plus zero equals three.

**10.**

Answer:

Explanation:

Addition:

1 + 3 = 4.

=> One plus three equals four.

11.

Answer:

Explanation:

Addition:

4 + 2 = 6.

=> Four plus two equals six.

**12.**

Answer:

Explanation:

Addition:

1 + 2 = 3.

=> One plus two equals three.

**13.** 0 + 6 = ____

Answer:

0 + 6 = 6.

Explanation:

Addition:

0 + 6 = 6.

=> Zero plus six equals six.

**14.** 3 + 3 = ____

Answer:

3 + 3 = 6.

Explanation:

Addition:

3 + 3 = 6.

=> Three plus three equals six.

**15.** 0 + 4 = ____

Answer:

0 + 4 = 4.

Explanation:

Addition:

0 + 4 = 4.

=> Zero plus four equals four.

**16.** 3 + 1 = ____

Answer:

3 + 1 = 4.

Explanation:

Addition:

3 + 1 = 4.

=> Three plus one equals four.

**17.** 2 + 4 = ____

Answer:

Explanation:

Addition:

2 + 4 = 6.

=> Two plus four equals six.

**18.** 1 + 5 = ____

Answer:

1 + 5 = 6.

Explanation:

Addition:

1 + 5 = 6.

=> One plus five equals six.

**Subtract.**

**19.**

Answer:

Explanation:

Subtraction:

6 – 1 = 5.

=> Six minus one equals five.

**20.**

Answer:

Explanation:

Subtraction:

4 – 2 = 2.

=> Four minus two equals two.

**21.**

Answer:

Explanation:

Subtraction:

3 – 1 = 2.

=> Three minus one equals two.

**22.**

Answer:

Explanation:

Subtraction:

5 – 3 = 2.

=> Five minus three equals two.

**23.**

Answer:

Explanation:

Subtraction:

2 – 0 = 2.

=> Two minus zero equals two.

**24.**

Answer:

Explanation:

Subtraction:

4 – 1 = 3.

=> Four minus one equals three.

**25.**

Answer:

Explanation:

Subtraction:

5 – 2 = 3.

=> Six minus two equals three.

**26.**

Answer:

Explanation:

Subtraction:

6 – 4 = 2.

=> Six minus four equals two.

**27.**

Answer:

Explanation:

Subtraction:

2 – 1 = 1.

=> Two minus one equals one.

**28.**

Answer:

Explanation:

Subtraction:

3 – 2 = 1.

=> Three minus two equals one.

**29.**

Answer:

Explanation:

Subtraction:

6 – 5 = 1.

=> Six minus five equals one.

**30.**

Answer:

Explanation:

Subtraction:

5 – 0 = 5.

=> Five minus zero equals five.

**31.** 4 – 3 = ____

Answer:

4 – 3 = 1.

Explanation:

Subtraction:

4 – 3 = 1.

=> Four minus three equals one.

**32.** 6 – 2 = ____

Answer:

6 – 2 = 4.

Explanation:

Subtraction:

6 – 2 = 4.

=> Six minus two equals four.

**33.** 5 – 4 = ____

Answer:

5 – 4 = 1.

Explanation:

Subtraction:

5 – 4 = 1.

=> Five minus four equals one.

**34.** 6 – 3 = ___

Answer:

6 – 3 = 3.

Explanation:

Subtraction:

6 – 3 = 3.

=> Six minus three equals three .

**35.** 1 – 0 = ___

Answer:

1 – 0 = 1.

Explanation:

Subtraction:

1 – 0 = 1.

=> One minus zero equals one.

**36.** 2 – 2 = ___

Answer:

2 – 2 = 0.

Explanation:

Subtraction:

2 – 2 = 0.

=> Two minus two equals zero.

**Solve each problem.**

**37.** There are 2 .

There are 4 .

How many in all ? _____

Answer:

Total number of buildings and houses = 4.

Explanation:

Number of buildings = 2.

Number of Houses = 2.

Total number of buildings and houses = Number of buildings + Number of Houses

= 2 + 2

= 4.

**38.** Jeff has 4 .

Karen has 1 .

What is the difference? ______

Answer:

The difference between Jeff and Karen having baseballs is 3.

Explanation:

Number of base balls Jeff has = 4.

Number of base balls Karen has = 1.

Difference:

Number of base balls Jeff has – Number of base balls Karen has

= 4 – 1

= 3.

**39.** There are 5 .

3 fly away.

Subtract 5 minus 3. _____

Answer:

Number of butterflies are left = 2.

5 minus 3 equals 2.

Explanation:

Number of butterflies there = 5.

Number of butterflies flew away = 3.

Difference:

Number of butterflies are left = Number of butterflies there – Number of butterflies flew away

= 5 – 3

= 2.

**40.** There is 1 .

There are 2 .

Add 1 plus 2. ____

Answer:

Total number of pencils and pens there = 3.

1 plus 2 equals three.

Explanation:

Number of Pencils there = 1.

Number of pens there = 2.

Total number of pencils and pens there = Number of Pencils there + Number of pens there

= 1 + 2

= 3.

**Add.**

**41.**

Answer:

Explanation:

Addition:

9 + 1 = 10.

=> Nine plus one equals ten.

**42.**

Answer:

Explanation:

Addition:

2 + 7 = 9.

=> Two plus seven equals nine.

**43.**

Answer:

Explanation:

Addition:

6 + 4 = 10.

=> Six plus four equals ten.

**44.**

Answer:

Explanation:

Addition:

0 + 8 = 8.

=> Zero plus eight equals eight.

**45.**

Answer:

Explanation:

Addition:

5 + 3 = 8.

=> Five plus three equals eight.

**46.**

Answer:

Explanation:

Addition:

1 + 6 = 7.

=> One plus six equals seven.

**47.**

Answer:

Explanation:

Addition:

4 + 4 = 8.

=> Four plus four equals eight.

**48.**

Answer:

Explanation:

Addition:

0 + 9 = 9.

=> Zero plus nine equals nine.

**49.**

Answer:

Explanation:

Addition:

3 + 6 = 9.

=> Three plus six equals nine.

50.

Answer:

Explanation:

Addition:

2 + 8 = 10.

=> Two plus eight equals ten.

**51.**

Answer:

Explanation:

Addition:

7 + 3 = 10.

=> Seven plus three equals ten.

**52.**

Answer:

Explanation:

Addition:

3 + 4 = 7.

=> Three plus four equals seven.

**53.**

Answer:

Explanation:

Addition:

10 + 0 = 10.

=> Ten plus zero equals ten.

**54.**

Answer:

Explanation:

Addition:

1 + 4 = 5.

=> One plus four equals five.

**55.**

Answer:

Explanation:

Addition:

2 + 5 = 7.

=> Two plus five equals seven.

**56.**

Answer:

Explanation:

Addition:

8 + 1 = 9.

=> Eight plus one equals nine.

**57.**

Answer:

Explanation:

Addition:

5 + 5 = 10.

=> Five plus five equals ten.

**58.**

Answer:

Explanation:

Addition:

6 + 2 = 8.

=> Six plus two equals eight.

**59.**

Answer:

Explanation:

Subtraction:

10 – 5 = 5.

=> Ten minus five equals five.

**Subtract.**

**60.**

Answer:

Explanation:

Subtraction:

10 – 8 = 2.

=> Ten minus eight equals two.

**61.**

Answer:

Explanation:

Subtraction:

9 – 3 = 6.

=> Nine minus three equals six.

**62.**

Answer:

Explanation:

Subtraction:

8 – 6 = 2.

=> Eight minus six equals two.

**63.**

Answer:

Explanation:

Subtraction:

7 – 1 = 6.

=> Seven minus one equals six.

**64.**

Answer:

Explanation:

Subtraction:

9 – 0 = 9.

=> Nine minus zero equals nine.

**65.**

Answer:

Explanation:

Subtraction:

8 – 7 = 1.

=> Eight minus seven equals one.

**66.**

Answer:

Explanation:

Subtraction:

10 – 3 = 7.

=> Ten minus three equals seven.

**67.**

Answer:

Explanation:

Subtraction:

7 – 7 = 0.

=> Seven minus seven equals zero.

**68.**

Answer:

Explanation:

Subtraction:

9 – 5 = 4.

=> Nine minus five equals four.

**69.**

Answer:

Explanation:

Subtraction:

8 – 1 = 7.

=> Eight minus one equals seven.

**70.**

Answer:

Explanation:

Subtraction:

7 – 4 = 3.

=> Seven minus four equals three.

**71.**

Answer:

Explanation:

Subtraction:

10 – 1 = 9.

=> Ten minus one equals nine.

**72.**

Answer:

Explanation:

Subtraction:

9 – 8 = 1.

=> Nine minus eight equals one.

**73.**

Answer:

Explanation:

Subtraction:

8 – 4 = 4.

=> Eight minus four equals four.

**74.**

Answer:

Explanation:

Subtraction:

10 – 2 = 8.

=> Ten minus two equals eight.

**75.**

Answer:

Explanation:

Subtraction:

7 – 0 = 7.

=> Seven minus zero equals seven.

**76.**

Answer:

Explanation:

Subtraction:

10 – 9 = 1.

=> Ten minus nine equals one.

**Solve each problem.**

**77.** There are 4 .

5 more come.

Now how many are here? _______

Answer:

Total number of rabbits there = 9.

Explanation:

Number of rabbits there = 4.

Number of rabbits more came = 5.

Total number of rabbits there = Number of rabbits there + Number of rabbits more came

= 4 + 5

= 9.

**78.** There are 9 .

There are 6 .

How many more than are there? _____

Answer:

There are 3 more Â Â than .

Explanation:

Number of leaves there = 9.

Number of leaves there = 6.

Difference:

Number of leaves there – Number of leaves there

= 9 – 6

= 3.

**79.**

Miguel has 10âŠ„.

He buys for 7âŠ„.

How much money does he have left? ________ âŠ„

Answer:

Number of âŠ„ Miguel is left with = 3.

Explanation:

Number of âŠ„ Miguel has = 10.

Cost of toy Miguel buys = 7âŠ„ .

Number of âŠ„ Miguel is left with = Number of âŠ„ Miguel has – Cost of toy Miguel buys

= 10 – 7

= 3.

**80.** Jenny has 5 .

She finds 2 more .

What is the sum of 5 plus 2? ________

Answer:

Total number of flowers Jenny has now = 7.

The sum of 5 plus 2 equals 7.

Explanation:

Number of flowers Jenny has = 5.

Number of flowers Jenny finds more = 2.

Total number of flowers Jenny has now = Number of flowers Jenny has + Number of flowers Jenny finds more

= 5 + 2

= 7.

**81.** There are 8 .

3 ran away.

What is 8 minus 3? _____

Answer:

Number of Squirrels left = 5.

8 minus 3 equals 5.

Explanation:

Number of Squirrels there = 8.

Number of Squirrels ran away = 3.

Number of Squirrels left = Number of Squirrels there – Number of Squirrels ran away

= 8 – 3

= 5.

**82.** I buy for 4âŠ„.

I buy for 6âŠ„.

How much money did I spend? ____ âŠ„

Answer:

Total cost of pencil and pens I buy = 10âŠ„.

Explanation:

Cost of one pencils = 4âŠ„.

Cost of one pen = 6âŠ„.

Total cost of pencil and pens I buy = Cost of one pencils + Cost of one pen

= 4 + 6

= 10âŠ„.