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
5 × 10 = ______
89 + 20 = ______
4 × 10 = ______
25 + 20 = ______
97 − 10 = ______
7 × 10 = ______
30 + 10 = ______
70 + 20 = ______
65 − 10 = ______
80 + 10 = ______
79 + 20 = ______
90 − 10 = ______
33 + 20 = ______
56 − 10 = ______
9 × 10 = ______
39 + 10 = ______
94 − 10 = ______
2 × 10 = ______
70 + 10 = ______
57 + 20 = ______
