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
22 + 20 = ______
40 + 10 = ______
32 − 10 = ______
99 − 10 = ______
54 + 10 = ______
48 + 10 = ______
26 + 10 = ______
78 + 10 = ______
52 + 10 = ______
8 × 10 = ______
39 + 20 = ______
98 − 10 = ______
33 + 20 = ______
44 − 10 = ______
40 − 10 = ______
77 − 10 = ______
49 + 20 = ______
7 × 10 = ______
1 × 10 = ______
65 − 10 = ______
