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
84 − 10 = ______
85 + 20 = ______
2 × 10 = ______
35 + 20 = ______
40 − 10 = ______
80 − 10 = ______
8 × 10 = ______
14 + 20 = ______
84 + 20 = ______
44 − 10 = ______
35 + 10 = ______
66 − 10 = ______
65 + 20 = ______
26 − 10 = ______
51 + 10 = ______
9 × 10 = ______
18 + 20 = ______
58 + 10 = ______
55 − 10 = ______
16 + 20 = ______
