When subtracting, remind the students they are counting backwards. When counting backwards, the numbers get smaller. Touchpoints are also helpful when subtracting.
What is a bundle? Bundling is also called grouping. This is a way to group numbers by putting the smaller units together to make a larger one. For instance, putting 10 ones together makes 1 ten. Putting 10 tens together makes 1 hundred.
When looking at an array. we use the number of rows as the first number in the Math fact. For example, 3 x 4 is three rows of four.
For rounding by tens use a number to show your child which ten they are rounding off is closer to. This will help them see the answer.
Fluency in basic math facts is a must, so why not use techonology to help your child with this skill? For instance, www.factmonster.com is full of useful tools, including a link to flashcards for all four basic math operations. They will love how interactive this website is, and it works for any grade level!