Math Drills

Subtracting Tens

Fill in the Blank

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What this worksheet covers

Grade: Grade 1 (Elementary School)
Topic: Adding and Subtracting Tens
Worksheet: Subtraction

Counting in tens, a way of seeing built up on the adding side, is put to work here in the direction of taking away. One multiple of ten is subtracted from another, and the answer is a multiple of ten as well. Once the recounting touch is in hand from Calculation, the same view carries through Fill in the Blank and Word Problems.

Writing 3 for 70 - 40, with the zero of the ones place gone, leads the field. Saying aloud how many tens are left before writing prevents it. Because the box in Fill in the Blank does not stand where the answer goes, the count of tens has to be traced backwards, and some children stall there.

Two lessons complete the unit. The run of raising the place value while leaving the view of number alone pauses here, and from 2-Digit ± 1-Digit onward tens and ones turn up together inside one equation.

Fill in the Blank24 questions

Questions & answers

Problems and answers on this worksheet

These are the problems in “Adding and Subtracting Tens”, shown with their answers.

(1)60-□=40
Answer: 20
(2)50-□=20
Answer: 30
(3)80-□=60
Answer: 20
(4)□-50=30
Answer: 80
(5)□-40=40
Answer: 80
(6)□-10=70
Answer: 80
(7)70-□=50
Answer: 20
(8)□-80=10
Answer: 90
(9)60-□=50
Answer: 10
(10)60-□=30
Answer: 30
(11)□-30=20
Answer: 50
(12)□-20=40
Answer: 60
(13)□-10=50
Answer: 60
(14)70-□=30
Answer: 40
(15)□-40=50
Answer: 90
(16)□-20=50
Answer: 70
(17)80-□=10
Answer: 70
(18)□-30=10
Answer: 40
(19)□-20=20
Answer: 40
(20)80-□=20
Answer: 60
(21)□-50=10
Answer: 60
(22)□-70=10
Answer: 80
(23)□-30=30
Answer: 60
(24)50-□=10
Answer: 40

What to do next

Adding TensAdding Tens Calculation

Next unit: 2-Digit ± 1-Digit