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
24 + 20 = ______
5 × 10 = ______
28 − 10 = ______
35 − 10 = ______
27 + 10 = ______
80 − 10 = ______
9 × 10 = ______
81 − 10 = ______
59 + 10 = ______
34 + 20 = ______
80 + 10 = ______
49 + 20 = ______
1 × 10 = ______
26 − 10 = ______
2 × 10 = ______
74 − 10 = ______
14 + 20 = ______
78 − 10 = ______
7 × 10 = ______
90 − 10 = ______
