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
55 + 20 = ______
15 + 10 = ______
81 + 10 = ______
7 × 10 = ______
14 + 10 = ______
70 + 20 = ______
30 − 10 = ______
88 − 10 = ______
90 − 10 = ______
83 + 10 = ______
89 + 20 = ______
30 + 20 = ______
23 − 10 = ______
81 + 20 = ______
57 − 10 = ______
5 × 10 = ______
2 × 10 = ______
8 × 10 = ______
70 − 10 = ______
9 × 10 = ______
