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
17 + 20 = ______
7 × 10 = ______
32 + 20 = ______
78 − 10 = ______
26 + 10 = ______
79 − 10 = ______
80 + 20 = ______
96 − 10 = ______
85 − 10 = ______
81 − 10 = ______
1 × 10 = ______
22 − 10 = ______
19 + 20 = ______
66 + 10 = ______
6 × 10 = ______
87 − 10 = ______
50 + 10 = ______
50 + 20 = ______
84 − 10 = ______
43 + 10 = ______
