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
26 − 10 = ______
79 + 10 = ______
7 × 10 = ______
70 + 20 = ______
58 + 10 = ______
61 + 10 = ______
58 + 20 = ______
42 − 10 = ______
44 − 10 = ______
50 + 20 = ______
81 − 10 = ______
2 × 10 = ______
84 + 10 = ______
9 × 10 = ______
17 + 10 = ______
49 − 10 = ______
63 + 10 = ______
88 + 20 = ______
6 × 10 = ______
87 + 10 = ______
