Multiplication Facts 0-10 — Answer Key
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
5 × 8 = 45
Corrected: 5 × 8 = 40
Skip-counting by 5 eight times gives 5, 10, 15, 20, 25, 30, 35, 40, so 5 × 8 = 40, not 45.
2. Fix the sentence:
2 × 9 = 16
Corrected: 2 × 9 = 18
Two groups of nine is 2 × 9 = 18, the same as doubling 9. The original 16 is wrong.
3. Fix the sentence:
10 × 6 = 66
Corrected: 10 × 6 = 60
Multiplying by 10 puts a zero after the other factor, so 10 × 6 = 60, not 66.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. 2 × 7 = 14.
Two groups of seven is 7 + 7 = 14, which is the same as doubling 7 to reach 14.
2. Products of 5 always end in 0 or 5.
Look at the pattern of multiples of 5 — 5, 10, 15, 20, 25, 30 — every product ends in either 0 or 5.
3. 10 × 4 = 40.
Ten times any single-digit number just adds a zero, so 10 × 4 = 40.
4. Multiplying by 2 is the same as doubling a number.
Doubling fits because multiplying by 2 means making two equal groups of a number, the same thing as adding the number to itself.
Part C: True or False?
Read each statement. Circle True or False.
1. All products of 10 end in zero.
True False
True. Multiples of 10 always end in zero because 10 itself ends in zero, so 10 × 1 = 10, 10 × 2 = 20, 10 × 3 = 30, and so on.
2. 5 × 5 = 30.
True False
False. 5 × 5 = 25, not 30. Skip-counting by 5 five times gives 5, 10, 15, 20, 25.
3. 2 × 8 = 16.
True False
True. 2 × 8 means doubling 8, which is 8 + 8 = 16.