# 1st Grade Math Standards

by M Raymer
# 1. Number Sense

## 1.1. Students understand and use numbers up to 100

### 1.1.1. Count, read, and write whole numbers to 100

1.1.1.1. Applets, freeware, and video clips

1.1.1.1.1. Not recommended

### 1.1.2. Compare and order whole numbers to 100 by using the symbols for less than, equal to, or greater than (<,=,>).

1.1.2.1. Applets, freeware, and video clips

1.1.2.1.1. Highly recommended

1.1.2.1.2. Potentially useful

### 1.1.3. Represent equivalent forms of the same number through the use of physical models, diagrams, and number expressions (to 20)(e.g., 8 may be represented as 4+4, 5+3, 2+2+2+2, 10-2, 11-3).

1.1.3.1. Applets, freeware, and video clips

1.1.3.1.1. Highly recommended

### 1.1.4. Count and group object in ones and tens (e.g., three groups of 10 and 4 equals 34, or 30+4).

1.1.4.1. Applets, freeware, and video clips

1.1.4.1.1. Highly recommended

1.1.4.1.2. Potentially useful

### 1.1.5. Identify and know the value of coins and show different combinations of coins that equal the same value.

1.1.5.1. Applets, freeware, and video clips

1.1.5.1.1. Highly recommended

1.1.5.1.2. Potentially useful

## 1.2. Students demonstrate the meaning of addition and subtraction and use these operations to solve problems.

### 1.2.1. Know the addition facts (sums to 20) and the corresponding subraction facs and commit them to memory.

1.2.1.1. Applets, freeware, and video clips

1.2.1.1.1. Highly recommended

1.2.1.1.2. Not recommended

### 1.2.2. Use the inverse relationship between addition and subtraction to solve problems.

1.2.2.1. Applets, freeware, and video clips

1.2.2.1.1. Potentially useful

### 1.2.3. Identify one more than, one less than, 10 more than, and 10 less than a given number.

### 1.2.4. Count by 2s, 5s, and 10s to 100.

1.2.4.1. Applets, freeware, and video clips

1.2.4.1.1. Highly recommended

### 1.2.5. Show the meaning of addition (putting together, increasing) and subtraction (taking away, comparing, finding the difference).

1.2.5.1. Applets, freeware, and video clips

1.2.5.1.1. Highly recommended

### 1.2.6. Solve addition and subtraction problems with one- and two-digit numbers (e.g., 5+58=__).

1.2.6.1. Applets, freeware, and video clips

1.2.6.1.1. Not recommended

### 1.2.7. Find the sum of three one-digit numbers.

## 1.3. Students use estimation strategies in computation and problem solving that involve numbers that use the ones, tens, and hundreds places.

### 1.3.1. Make reasonalbe estimates when comparing larger or smaller numbers.

1.3.1.1. Applets, freeware, and video clips

1.3.1.1.1. Potentially useful