Adding and Subtracting Three Digits

Find the sum: 47 + 135 + 70

Write two addition facts and two subtraction facts for the fact family: 4, 8, and 12.

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When adding and subtracting decimals always ​ ​ (a)   the decimal place before proceeding.

It is important to put ​ (b)   as place holders when dealing with different quantities of digits.

• line-up

• show

• forget

• zeros

• commas

• decimals

Which of the following is the first step in adding decimals?

• Put the decimal point in the answer.

• Write the numbers vertically.

• Subtract the numbers as usual.

• Add zeroes after the last digit.

Monika drinks 1,466 milliliters of water a day. Victor drinks 2,895 mililiters more than Monika. How much water does Victor drink?

• 4361 milliliters

• 4351 milliliters

• 1429 milliliters

• 1329 milliliters

What number will be added to 123.7 to get the sum 134.8?

• 11.2

• 12.1

• 13.1

• 11.1

20-7.4=

• 12.6

• 12.5

• 12.06

• 12.60

89.34 + 98

• 100

• Apples

• 187.34

• 18734

236 + 452=

• 688

• 788

• 224

• 689

Silas has 328 beads. Carson has 124 beads. How many beads do they have in all?

• 451

• 452

• 552

• 521