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
32 + 20 = ______
30 + 20 = ______
8 × 10 = ______
76 + 10 = ______
37 + 20 = ______
78 + 10 = ______
90 − 10 = ______
99 − 10 = ______
22 + 10 = ______
3 × 10 = ______
75 − 10 = ______
87 + 20 = ______
88 − 10 = ______
63 + 10 = ______
16 + 10 = ______
19 + 10 = ______
58 + 10 = ______
7 × 10 = ______
87 − 10 = ______
65 + 20 = ______
