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
79 − 10 = ______
35 + 20 = ______
9 × 10 = ______
51 − 10 = ______
4 × 10 = ______
6 × 10 = ______
38 − 10 = ______
2 × 10 = ______
8 × 10 = ______
87 + 20 = ______
49 − 10 = ______
78 + 10 = ______
68 − 10 = ______
15 + 10 = ______
3 × 10 = ______
81 + 10 = ______
63 − 10 = ______
34 + 10 = ______
26 − 10 = ______
22 + 10 = ______
