Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
1 × 10 = ______
9 × 10 = ______
4 × 10 = ______
7 × 10 = ______
16 + 20 = ______
28 − 10 = ______
8 × 10 = ______
20 + 20 = ______
38 + 10 = ______
14 + 20 = ______
41 − 10 = ______
88 + 20 = ______
42 − 10 = ______
91 − 10 = ______
30 + 20 = ______
5 × 10 = ______
34 + 10 = ______
2 × 10 = ______
17 + 10 = ______
50 + 10 = ______
